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<p class="header">iCalcreator v2.12</p>
<p>
iCalcreator v2.12<br>
copyright (c) 2007-2012 Kjell-Inge Gustafsson, kigkonsult<br>
<a href="http://kigkonsult.se/iCalcreator/index.php" title="kigkonsult.se/iCalcreator" target="_blank">kigkonsult.se iCalcreator</a><br>
<a href="http://kigkonsult.se/contact/index.php" title="kigkonsult.se contact" target="_blank">kigkonsult.se contact</a>
</p>

<h2>Description:</h2>
<p/>
iCalcreator is a <em>PHP</em> implementation of RFC2445/RFC2446 to manage iCal/xCal formatted files.
</p>

<a name="INTRO"></a><h1>1. INTRO</h1>
<p>
iCalcreator is a <em>PHP</em> class package managing iCal files, supporting (non-)<strong>calendar</strong> 
systems and applications to process and communicate <strong>calendar</strong> information like 
events, agendas, tasks, reports, totos and journaling information.
</p>
<p>
iCalcreator features create, parse, edit and select <strong>calendar</strong> and <strong>calendar</strong> components.
</p>
<p>
The iCalcreator package, built of a <strong>calendar</strong> class with support of a function class and helper functions, are <strong>calendar</strong>
component property oriented. Development environment is <em>PHP</em> version 5.x but coding is done
to meet 4.x backward compatibility and may work. Some functions requires <em>PHP</em> >= 5.2.0.
</p>
<p>
The iCalcreator main class, utility class and helper functions are included in the &quot;iCalcreator.class.php&quot; file.
</p>
<p>
More iCalcreator supplementary and &quot;howto&quot; information will be found at 
kigkonsult.se iCalcreator implement examples and test <a href="http://kigkonsult.se/test/index.php" title="kigkonsult.se iCalcreator implement howto" target="_blank">pages</a>. 
A strong recommendation is to have this document open in parallell when exploiting the link.
</p>

<br>
<a href="#INDEX">[index]</a> <a href="#top">[top]</a>

<a name="Standards"></a><h2>1.1 Standards</h2>

<h4>iCal</h4>
The <strong>iCalendar</strong> format, <strong>iCal</strong>, as described in
<dl>
<dt><a href="http://kigkonsult.se/downloads/dl.php?f=rfc5545" title="Download RFC5545 in text format" target="_blank">rfc5545</a>
<dd>&quot;Internet Calendaring and Scheduling Core Object Specification (<strong>iCalendar</strong>)&quot;
<dt><a href="http://kigkonsult.se/downloads/dl.php?f=rfc5546" title="Download RFC5546 in text format" target="_blank">rfc5546</a>
<dd>&quot;iCalendar Transport-Independent Interoperability Protocol (iTIP)&quot;<br>Scheduling Events, BusyTime, To-dos and Journal Entries
</dl>
<p class="quotes">. ..allows for the capture and exchange of information<br>normally stored within a calendaring and scheduling application.</p>
and
<p class="quotes">. ..is an exchange format between applications or systems.</p>
<p><a href="http://kigkonsult.se/downloads/dl.php?f=rfc5545" title="Download RFC5545 in text format" target="_blank">rfc5545</a> and
<a href="http://kigkonsult.se/downloads/dl.php?f=rfc5546" title="Download RFC5546 in text format" target="_blank">rfc5546</a>
obsoletes, respectively,
<a href="http://kigkonsult.se/downloads/dl.php?f=rfc2445" title="Download RFC2445 in text format" target="_blank">rfc2445</a> and
<a href="http://kigkonsult.se/downloads/dl.php?f=rfc2446" title="Download RFC2446 in text format" target="_blank">rfc2446</a>.
</p>
<p>
A short iCal description is found at <a href="http://en.wikipedia.org/wiki/ICalendar#Core_object" title="iCalendar From Wikipedia, the free encyclopedia" target="_blank">Wikipedia</a>. If You are not familiar with iCal, read this first!
Knowledge of <strong>calendar</strong> protocol rfc5545/rfc5546 is to recommend.
</p>
<p>
Any references to rfc2445, below, corresponds to rfc5545.
</p>

<h4>xCal</h4>
<p>iCalcreator also supports xCal (iCal xml) rfc6321, &quot;xCal: The XML Format for <strong>iCalendar</strong>&quot;, to be downloaded from</p>
<dl>
<dt><a href="http://kigkonsult.se/downloads/dl.php?f=rfc6321" title="Download RFC6321 in text format" target="_blank">rfc6321</a>
<dd>&quot;xCal: The XML Format for <strong>iCalendar</strong>&quot;
</dl>
<p>
A short xCal description is found at <a href="http://en.wikipedia.org/wiki/XCal" title="xCal on Wikipedia, the free encyclopedia" target="_blank">Wikipedia</a>.
</p>

<br>
<a href="#INDEX">[index]</a> <a href="#top">[top]</a>


<a name="This_manual"></a><h2>1.2 This manual</h2>
<p>This style is used for text.</p>
<p class="format">This style is used for formats.</p>
<p class="example">This style is used for <em>PHP</em> coding examples.
<span class="comment"> // this style is used for coding comments.</span>
</p>
<p class="comment">This style is used for content details.</p>
<p class="quotes">This style is used for RFC2445 quotes.</p>

<br>
<a href="#INDEX">[index]</a> <a href="#top">[top]</a>


<a name="Versioning"></a><h2>1.3 Versioning</h2>

<p>The release numbering convention used is major.minor(.micro&nbsp;/&nbsp;suffix).</p>
<dl>
<dt>Major
<dd>Indicates a very large change in the core package. Rewrites or major milestones.
<dt>Minor
<dd>Significant amount of feature addition/modification.<br>odd number - development/experimental release<br> even number - production release
<dt>Micro
<dd>Primarily bug fix and maintenance number.
<dt>Suffix
<dd>rc1 for first release candidate etc.
</dl>

<br>
<a href="#INDEX">[index]</a> <a href="#top">[top]</a>

<a name="Support"></a><h2>1.4 Support</h2>
<p>
The main support channel is using iCalcreator
<a title="Sourceforge" href="http://sourceforge.net/projects/icalcreator/forums/" target="_blank">Sourceforge</a> forum.
</p>
<p>
Use the contact <a href="http://kigkonsult.se/contact/index.php" title="kigkonsult.se/contact" target="_blank">page</a>
for queries, improvement/development issues or professional support and development.
Please note that paid support or consulting service has the highest priority.
</p>
<p>
kigkonsult offer services for software support, design and development of customizations and adaptations 
of <em>PHP</em>/<em>MySQL</em> solutions 
with a special focus on software long term utility and reliability,
supported through our agile acquire/design/transition process model.
</p>

<br>
<a href="#INDEX">[index]</a> <a href="#top">[top]</a>


<a name="Donate"></a><h2>1.5 Donate</h2>
<p>
You can show your appreciation for our free software,
and can support future development by making a donation to the kigkonsult project iCalcreator.
</p>
<p>
Make a donation of any size by clicking <a href="http://kigkonsult.se/contact/index.php#Donate" title="Donate" target="_blank">here</a>.
Thanks in advance!
</p>

<br>
<a href="#INDEX">[index]</a> <a href="#top">[top]</a>

<a name="INSTALL"></a><h2>1.6 Install</h2>

<a name="Basic"></a><h3>1.6.1 Basic</h3>
<p>
Unpack to any folder<br>
- add this folder to your include-path<br>
- or unpack to your application-(include)-folder
</p>
<p>Add</p>
<p class="format">require_once &quot;[folder/]iCalcreator.class.php&quot;;</p>
<p>to your <em>PHP</em>-script.</p>
<p>
If using <em>PHP</em> version 5.1 or higher, the default timezone need to be set/altered, now &quot;Europe/Stockholm&quot;,
line 50 in the iCalcreator.class.php file.
</p>
<p>
When creating a new <strong>calendar</strong>/component instance, review <a href="#Calendar_configuration_functions">config</a> settings.
</p>

<br>
<a href="#INDEX">[index]</a> <a href="#top">[top]</a>


<a name="Boost"></a><h3>1.6.2 Boost performance</h3>
<p>
To really boost performance, kigkonsult can now offer <em>PHP</em> (4 and 5) packages (iCalcreator etc) in byte coded files,
using <a href="http://www.ioncube.com" target="_blank"><u>ionCube</u></a> encoder.
</p>
<p>
Encoded files use a platform independent file format, and can be run on any platform for which ionCube supply a (free) Loader.
Currently supported platforms are Windows (e.g. NT, XP, W2K), Intel Linux, FreeBSD, NetBSD, OpenBSD, OS X, and Sparc Solaris.
</p>
<p>
Visit kigkonsult.se contact <a href="http://kigkonsult.se/contact/index.php" target="_blank"><u>page</u></a> for information and purchase.
</p>
<p>
Use basic install (above), install ionCube Loader (requires an update of &quot;php.ini&quot; or additional file in &quot;/etc/php.d&quot; folder AND the execute rights to use the <i>PHP</i> &quot;dl&quot; function) and simply replace the <em>PHP</em> class files with the encoded files.
</p>

<br>
<a href="#INDEX">[index]</a> <a href="#top">[top]</a>


<a name="Additional_Descriptors"></a><h2>1.7 Additional Descriptors</h2>
<p>The following properties (as described in <a href="http://en.wikipedia.org/wiki/ICalendar#Calendar_extensions" title="http://en.wikipedia.org/wiki/ICalendar#Calendar_extensions" target="_blank">wikipedia:iCal</a>) 
may be required when importing iCal files  into some calendaring software (MS etc.):</p>
<dl>
<dt>on <strong>calendar</strong> level
<dd><a href="#METHOD">METHOD</a> property (value PUBLISH etc.)
<dd><a href="#X-PROPERTY">X-WR-CALNAME</a> x-property
<dd><a href="#X-PROPERTY">X-WR-CALDESC</a> x-property
<dd><a href="#X-PROPERTY">X-WR-RELCALID</a> x-property <span class="comment">(a <a href="/wiki/Universally_Unique_Identifier" title="Universally Unique Identifier" class="mw-redirect">UUID</a>.)</span>
<dd><a href="#X-PROPERTY">X-WR-TIMEZONE</a> x-property
<dt>on component level
<dd><a href="#DTSTAMP">DTSTAMP</a> property (in iCalcreator created automatically, if not set)
<dd><a href="#UID">UID</a> property (in iCalcreator created automatically, if not set)
<dt>on component level in <a href="#VTIMEZONE">vtimezone</a> component
<dd><a href="#X-PROPERTY">X-LIC-LOCATION</a> x-property
</dl>
<p class="label">Example</p>
<p>Recommendation is also to set <a href="#Unique_id">unique_id</a> when creating a new vcalendar/component instance, 
to ensure accurate setting of all components <a href="#UID">UID</a> property, even before <a href="#parse_merge">parse</a>.</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
$vcalendar->setProperty( &quot;method&quot;,        &quot;PUBLISH&quot; )
$vcalendar->setProperty( &quot;x-wr-calname&quot;,  &quot;Calendar Sample&quot; );
$vcalendar->setProperty( &quot;X-WR-CALDESC&quot;,  &quot;Calendar Description&quot; );
$uuid = &quot;3E26604A-50F4-4449-8B3E-E4F4932D05B5&quot;;
$vcalendar->setProperty( &quot;X-WR-RELCALID&quot;, $uuid );
$vcalendar->setProperty( &quot;X-WR-TIMEZONE&quot;, &quot;Europe/Stockholm&quot; );
.. .
</p>

<br>
<a href="#INDEX">[index]</a> <a href="#top">[top]</a>


<a name="Addendum"></a><h2>1.8 Addendum</h2>
<p>
Download iCalcreator <a title="download iCalcreator coding samples" href="http://kigkonsult.se/downloads/index.php#iCalcreator" target="_blank">coding samples</a>.
</p>
<dl>
<dt>Examples how to employ iCalcreator in software development
<dd><a title="dbiCal" href="http://kigkonsult.se/dbiCal/index.php" target="_blank">dbiCal</a>, an iCal file <i>PHP</i> database backend solution.
<dd><a title="Create iCal event file on-demand from form" href="http://kigkonsult.se/eventCreator/index.php" target="_blank">The iCal file event editor</a>
<dd><a title="tinycal" href="http://kigkonsult.se/tinycal/index.php" target="_blank">tinycal</a>, <strong>calendar</strong>-in-a-box.
</dl>
<p>
If you are downloading the iCalcreatorusing sub-package, there are free iCal/xCal icons in the images directory, to use as buttons on a web page.
</p>
<p>
The <em>PHP</em> coding in this document or &quot;coding samples&quot; (above) are only for display of usage, recommendation is to use a
coding standard, the following, incomplete, list is a good start;
</p>
<dl>
<dd><a href="http://www.dagbladet.no/development/phpcodingstandard/" target="_blank">http://www.dagbladet.no/development/phpcodingstandard/</a>
<!-- <a href="http://ez.no/ezpublish/documentation/development/standards/php" target="_blank">http://ez.no/ezpublish/documentation/development/standards/php</a> -->
<dd><a href="http://framework.zend.com/manual/en/coding-standard.overview.html" target="_blank">http://framework.zend.com/manual/en/coding-standard.overview.html</a>
<!-- <a href="http://gforge.org/docman/view.php/1/2/coding-standards.html" target="_blank">http://gforge.org/docman/view.php/1/2/coding-standards.html</a> -->
<dd><a href="http://pear.php.net/manual/en/standards.php" target="_blank">http://pear.php.net/manual/en/standards.php</a>
</dl>

<br>
<a href="#INDEX">[index]</a> <a href="#top">[top]</a>


<a name="INDEX"></a><h2>1.9 INDEX</h2>

<a href="#INTRO">1. INTRO</a><br>
<br>
<a href="#Standards">1.1 Standards</a><br>
<a href="#This_manual">1.2 This manual</a><br>
<a href="#Versioning">1.3 Versioning</a><br>
<a href="#Support">1.4 Support</a><br>
<a href="#Donate">1.5 Donate</a><br>
<a href="#INSTALL">1.6 Install</a><br>
<a href="#Basic">1.6.1 Basic</a><br>
<a href="#Boost">1.6.2 Boost performance</a><br>
<a href="#Additional_Descriptors">1.7 Additional_Descriptors</a><br>
<a href="#Addendum">1.8 Addendum</a><br>
<a href="#INDEX">1.9 INDEX</a><br>
<br>
<a href="#Calendar_Component_list">2. Calendar Component list</a><br>
<br>
<a href="#VCALENDAR">2.1  VCALENDAR</a><br>
<a href="#VEVENT">2.2  VEVENT</a><br>
<a href="#VTODO">2.3  VTODO</a><br>
<a href="#VJOURNAL">2.4  VJOURNAL</a><br>
<a href="#VFREEBUSY">2.5  VFREEBUSY</a><br>
<a href="#VALARM">2.6  VALARM</a><br>
<a href="#VTIMEZONE">2.7  VTIMEZONE</a><br>
<a href="#CalProps">2.8  Component Properties</a><br>
<br>
<a href="#Function_list">3. Function list</a><br>
<br>
<a href="#Calendar_object_functions">3.1 Calendar object functions</a><br>
<br>
<a href="#Calendar_object_constructors">3.1.1 Constructors</a><br>
<a href="#vcalendar">3.1.1.1 vcalendar</a><br>
<a href="#vevent">3.1.1.2 vevent</a><br>
<a href="#vtodo">3.1.1.3 vtodo</a><br>
<a href="#vjournal">3.1.1.4 vjournal</a><br>
<a href="#vfreebusy">3.1.1.5 vfreebusy</a><br>
<a href="#valarm">3.1.1.6 valarm</a><br>
<a href="#vtimezone">3.1.1.7 vtimezone</a><br>
<a href="#standard">3.1.1.8 standard</a><br>
<a href="#daylight">3.1.1.9 daylight</a><br>
<br>
<a href="#Calendar_property_functions">3.1.2 Calendar property functions</a><br>
<a href="#deleteProperty">3.1.2.1 deleteProperty</a><br>
<a href="#getProperty">3.1.2.2 getProperty</a><br>
<a href="#setProperty">3.1.2.3 setProperty</a><br>
<a href="#CALSCALE">3.1.2.4 CALSCALE</a><br>
<a href="#METHOD">3.1.2.5 METHOD</a><br>
<a href="#VERSION">3.1.2.6 VERSION</a><br>
<a href="#X-PROPERTY">3.1.2.7 X-PROPERTY</a><br>
<br>
<a href="#Calendar_component_functions">3.1.3 Calendar component functions</a><br>
<a href="#deleteComponent">3.1.3.1 deleteComponent</a><br>
<a href="#getComponent">3.1.3.2 getComponent</a><br>
<a href="#newComponent">3.1.3.3 newComponent</a><br>
<a href="#selectComponents">3.1.3.4 selectComponents</a><br>
<a href="#setComponent">3.1.3.5 setComponent</a><br>
<br>
<a href="#Calendar_inputoutput_functions">3.1.4 Calendar input/output functions</a><br>
<a href="#parse_merge">3.1.4.1 parse and merge</a><br>
<a href="#createCalendar">3.1.4.2 createCalendar</a><br>
<a href="#returnCalendar">3.1.4.3 returnCalendar</a><br>
<a href="#saveCalendar">3.1.4.4 saveCalendar</a><br>
<a href="#sort">3.1.4.5 sort</a><br>
<a href="#useCachedCalendar">3.1.4.6 useCachedCalendar</a><br>
<br>
<a href="#Calendar_configuration_functions">3.1.5 Calendar configuration functions</a><br>
<a href="#configKeys">3.1.5.1 configuration keys</a><br>
<a href="#getConfig">3.1.5.2 getConfig</a><br>
<a href="#initConfig">3.1.5.3 calendar/component initialization</a><br>
<a href="#setConfig">3.1.5.4 setConfig</a><br>
<a href="#allowEmpty">3.1.5.5 Allow empty components</a><br>
<a href="#Compsinfo">3.1.5.6 Component information</a><br>
<a href="#Delimiter">3.1.5.7 Delimiter</a><br>
<a href="#Directory">3.1.5.8 Directory</a><br>
<a href="#Fileinfo">3.1.5.9 Fileinfo</a><br>
<a href="#Filename">3.1.5.10 Filename</a><br>
<a href="#Filesize">3.1.5.11 Filesize</a><br>
<a href="#Format">3.1.5.12 Format</a><br>
<a href="#Language">3.1.5.13 Language</a><br>
<a href="#NewlineChar">3.1.5.14 NewlineChar</a><br>
<a href="#dTZID">3.1.5.15 TZID</a><br>
<a href="#Unique_id">3.1.5.16 Unique_id</a><br>
<a href="#configURL">3.1.5.17 URL</a><br>
<br>
<a href="#Calendar_component_object_property_function_list">3.2 Calendar component/object property function list</a><br>
<br>
<a href="#deleteProperty_PROP">3.2.1 deleteProperty</a><br>
<a href="#getProperty_PROP">3.2.2 getProperty</a><br>
<a href="#parse">3.2.3 parse</a><br>
<a href="#setProperty_PROP">3.2.4 setProperty</a><br>
<br>
<a href="#ACTION">3.2.5 ACTION</a><br>
<a href="#ATTACH">3.2.6 ATTACH</a><br>
<a href="#ATTENDEE">3.2.7 ATTENDEE</a><br>
<a href="#CATEGORIES">3.2.8 CATEGORIES</a><br>
<a href="#CLASS">3.2.9 CLASS</a><br>
<a href="#COMMENT">3.2.10 COMMENT</a><br>
<a href="#COMPLETED">3.2.11 COMPLETED</a><br>
<a href="#CONTACT">3.2.12 CONTACT</a><br>
<a href="#CREATED">3.2.13 CREATED</a><br>
<a href="#DESCRIPTION">3.2.14 DESCRIPTION</a><br>
<a href="#DTEND">3.2.15 DTEND</a><br>
<a href="#DTSTAMP">3.2.16 DTSTAMP</a><br>
<a href="#DTSTART">3.2.17 DTSTART</a><br>
<a href="#DUE">3.2.18 DUE</a><br>
<a href="#DURATION">3.2.19 DURATION</a><br>
<a href="#EXDATE">3.2.20 EXDATE</a><br>
<a href="#EXRULE">3.2.21 EXRULE</a><br>
<a href="#FREEBUSY_PROP">3.2.22 FREEBUSY</a><br>
<a href="#GEO">3.2.23 GEO</a><br>
<a href="#LAST-MODIFIED">3.2.24 LAST-MODIFIED</a><br>
<a href="#LOCATION">3.2.25 LOCATION</a><br>
<a href="#ORGANIZER">3.2.26 ORGANIZER</a><br>
<a href="#PERCENT-COMPLETE">3.2.27 PERCENT-COMPLETE</a><br>
<a href="#PRIORITY">3.2.28 PRIORITY</a><br>
<a href="#RDATE">3.2.29 RDATE</a><br>
<a href="#RECURRENCE-ID">3.2.30 RECURRENCE-ID</a><br>
<a href="#RELATED-TO">3.2.31 RELATED-TO</a><br>
<a href="#REPEAT">3.2.32 REPEAT</a><br>
<a href="#REQUEST-STATUS">3.2.33 REQUEST-STATUS</a><br>
<a href="#RESOURCES">3.2.34 RESOURCES</a><br>
<a href="#RRULE">3.2.35 RRULE</a><br>
<a href="#SEQUENCE">3.2.36 SEQUENCE</a><br>
<a href="#STATUS">3.2.37 STATUS</a><br>
<a href="#SUMMARY">3.2.38 SUMMARY</a><br>
<a href="#TRANSP">3.2.39 TRANSP</a><br>
<a href="#TRIGGER">3.2.40 TRIGGER</a><br>
<a href="#TZID">3.2.41 TZID</a><br>
<a href="#TZNAME">3.2.42 TZNAME</a><br>
<a href="#TZOFFSETFROM">3.2.43 TZOFFSETFROM</a><br>
<a href="#TZOFFSETTO">3.2.44 TZOFFSETTO</a><br>
<a href="#TZURL">3.2.45 TZURL</a><br>
<a href="#UID">3.2.46 UID</a><br>
<a href="#URL">3.2.47 URL</a><br>
<a href="#X-PROPERTY_PROP">3.2.48 X-PROPERTY</a><br>
<br>
<a href="#Calendar_component_configuration_functions">3.3 Calendar Component configuration functions</a><br>
<br>
<a href="#Language_PROP">3.3.1 Language</a><br>
<br>
<a href="#Calendar_component_object_misc_functions">3.4 Calendar component object misc. functions</a><br>
<br>
<a href="#deleteComponent_PROP">3.4.1 deleteComponent</a><br>
<a href="#getComponent_PROP">3.4.2 getComponent</a><br>
<a href="#newComponent_PROP">3.4.3 newComponent</a><br>
<a href="#setComponent_PROP">3.4.4 setComponent</a><br>
<br>
<a href="#iCalUtilityFunctions">4. iCalUtilityFunctions</a><br>
<br>
<a href="#createTimezone">4.1 createTimezone</a><br>
<a href="#ms2phpTZ">4.2 ms2phpTZ</a><br>
<a href="#transformDateTime">4.3 transformDateTime</a><br>
<br>
<a href="#helperFunctions">5. Helper functions</a><br>
<a href="#iCal2XML">5.1 iCal2XML</a><br>
<a href="#XML2iCal">5.2 XML2iCal</a><br>
<a href="#TZhelpers">5.3 time zone helper functions</a><br>
<a href="#getTzOffsetForDate">5.3.1 getTzOffsetForDate</a><br>
<a href="#getTimezonesAsDateArrays">5.3.2 getTimezonesAsDateArrays</a><br>
<br>
<a href="#Copyright_and_Licence">5. COPYRIGHT AND LICENSE</a><br>
<a href="#Copyright">6.1 Copyright</a><br>
<a href="#Licence">6.2 License</a><br>
<br>
<a href="#INDEX">[index]</a> <a href="#top">[top]</a>

<a name="Calendar_Component_list"></a><h1>2. Calendar Component list</h1>
<p>
Quote from <a href="http://kigkonsult.se/downloads/dl.php?f=rfc2445" title="RFC2445" target="_blank">RFC2445</a> - Internet Calendaring and Scheduling Core Object Specification (<strong>iCalendar</strong>)!
(Described in iCal output format, content corresponds to xCal format.)
</p>
<a name="VCALENDAR"></a><h2>2.1  VCALENDAR</h2>
<p class="center">icalobject = 1*(&quot;BEGIN&quot; &quot;:&quot; &quot;VCALENDAR&quot; CRLF</p>
<p class="center">icalbody</p>
<p class="center">&quot;END&quot; &quot;:&quot; &quot;VCALENDAR&quot; CRLF)</p>
<p>icalbody = calprops component</p>
<p>calprops = 2*(</p>
<p class="center">&quot;prodid&quot; and &quot;version&quot; are both REQUIRED, but MUST NOT occur more than once
<p class="center">prodid / <a href="#VERSION">version</a> /</p>
<p class="center">&quot;calscale&quot;and &quot;method&quot;are optional, but MUST NOT occur more than once</p>
<p class="center"><a href="#CALSCALE">calscale</a> / <a href="#METHOD">method</a> /</p>
<p class="center"><a href="#X-PROPERTY">x-prop</a></p>
<p>)</p>
<p class="center">component  = 1*(<a href="#VEVENT">eventc</a> / <a href="#VTODO">todoc</a> / <a href="#VJOURNAL">journalc</a> / <a href="#VFREEBUSY">freebusyc</a> / <a href="#VTIMEZONE">timezonec</a> / iana-comp* / x-comp*)</p>
<p class="center">iana-comp  = &quot;BEGIN&quot; &quot;:&quot; iana-token CRLF</p>
<p class="center">1*contentline</p>
<p class="center">&quot;END&quot; &quot;:&quot; iana-token CRLF</p>
<p class="center">x-comp     = &quot;BEGIN&quot; &quot;:&quot; x-name CRLF</p>
<p class="center">1*contentline</p>
<p class="center">&quot;END&quot; &quot;:&quot; x-name CRLF</p>
<p>*) <span class="comment">not supported by iCalcreator</span></p>

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<a name="VEVENT"></a><h2>2.2  VEVENT</h2>
<p class="center">&quot;BEGIN&quot; &quot;:&quot; &quot;VEVENT&quot; CRLF</p>
<p class="center">eventprop *alarmc</p>
<p class="center">&quot;END&quot; &quot;:&quot; &quot;VEVENT&quot; CRLF</p>
<p>eventprop = *(</p>
<p class="center">the following are optional,but MUST NOT occur more than once</p>
<p class="center"><a href="#CLASS">class</a> / <a href="#CREATED">created</a> / <a href="#DESCRIPTION">description</a> / <a href="#DTSTART">dtstart</a> /</p>
<p class="center"><a href="#GEO">geo</a> / <a href="#LAST-MODIFIED">last-mod</a> / <a href="#LOCATION">location</a> / <a href="#ORGANIZER">organizer</a> / <a href="#PRIORITY">priority</a> / </p>
<p class="center"><a href="#DTSTAMP">dtstamp</a> / <a href="#SEQUENCE">seq</a> / <a href="#STATUS">status</a> / <a href="#SUMMARY">summary</a> / </p>
<p class="center"><a href="#TRANSP">transp</a> / <a href="#UID">uid</a> / <a href="#URL">url</a> / <a href="#RECURRENCE-ID">recurid</a> /</p>
<p class="center">either &quot;<a href="#DTEND">dtend</a>&quot; or &quot;<a href="#DURATION">duration</a>&quot; may appear in a &quot;eventprop&quot;, </p>
<p class="center">but &quot;<a href="#DTEND">dtend</a>&quot; and &quot;<a href="#DURATION">duration</a>&quot; MUST NOT occur in the same &quot;eventprop&quot;</p>
<p class="center"><a href="#DTEND">dtend</a> / <a href="#DURATION">duration</a> /</p>
<p class="center">the following are optional, and MAY occur more than once</p>
<p class="center"><a href="#ATTACH">attach</a> / <a href="#ATTENDEE">attendee</a> / <a href="#CATEGORIES">categories</a> / <a href="#COMMENT">comment</a> / </p>
<p class="center"><a href="#CONTACT">contact</a> / <a href="#EXDATE">exdate</a> / <a href="#EXRULE">exrule</a> / <a href="#REQUEST-STATUS">rstatus</a> / </p>
<p class="center"><a href="#RELATED-TO">related</a> / <a href="#RESOURCES">resources</a> / <a href="#RDATE">rdate</a> / <a href="#RRULE">rrule</a> / <a href="#X-PROPERTY_PROP">x-prop</a></p>
<p>)</p>

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<a name="VTODO"></a><h2>2.3  VTODO</h2>
<p class="center">&quot;BEGIN&quot; &quot;:&quot; &quot;VTODO&quot; CRLF</p>
<p class="center">todoprop *alarmc</p>
<p class="center">&quot;END&quot; &quot;:&quot; &quot;VTODO&quot; CRLF</p>
<p>todoprop   = *(</p>
<p class="center">the following are optional, but MUST NOT occur more than once</p>
<p class="center"><a href="#CLASS">class</a> / <a href="#COMPLETED">completed</a> / <a href="#CREATED">created</a> / <a href="#DESCRIPTION">description</a> / <a href="#DTSTAMP">dtstamp</a> / <a href="#DTSTART">dtstart</a> / </p>
<p class="center"><a href="#GEO">geo</a> / <a href="#LAST-MODIFIED">last-mod</a> / <a href="#LOCATION">location</a> / <a href="#ORGANIZER">organizer</a> / <a href="#PERCENT-COMPLETE">percent</a> / <a href="#PRIORITY">priority</a> / </p>
<p class="center"><a href="#RECURRENCE-ID">recurid</a> / <a href="#SEQUENCE">seq</a> / <a href="#STATUS">status</a> / <a href="#SUMMARY">summary</a> /<a href="#UID">uid</a> / <a href="#URL">url</a> /</p>
<p class="center">either &quot;<a href="#DUE">due</a>&quot; or &quot;<a href="#DURATION">duration</a>&quot; may appear in a &quot;todoprop&quot;,</p>
<p class="center"> but &quot;<a href="#DUE">due</a>&quot; and &quot;<a href="#DURATION">duration</a>&quot; MUST NOT occur in the same &quot;todoprop&quot;</p>
<p class="center"><a href="#DUE">due</a> / <a href="#DURATION">duration</a> /</p>
<p class="center">the following are optional,and MAY occur more than once</p>
<p class="center"><a href="#ATTACH">attach</a> / <a href="#ATTENDEE">attendee</a> / <a href="#CATEGORIES">categories</a> / <a href="#COMMENT">comment</a> / </p>
<p class="center"><a href="#CONTACT">contact</a> / <a href="#EXDATE">exdate</a> / <a href="#EXRULE">exrule</a> / <a href="#REQUEST-STATUS">rstatus</a> / </p>
<p class="center"><a href="#RELATED-TO">related</a> / <a href="#RESOURCES">resources</a> / <a href="#RDATE">rdate</a> / <a href="#RRULE">rrule</a> / <a href="#X-PROPERTY_PROP">x-prop</a></p>
<p>)</p>

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<a name="VJOURNAL"></a><h2>2.4  VJOURNAL</h2>
<p class="center">journalc   = &quot;BEGIN&quot; &quot;:&quot; &quot;VJOURNAL&quot; CRLF</p>
<p class="center">jourprop</p>
<p class="center">&quot;END&quot; &quot;:&quot; &quot;VJOURNAL&quot; CRLF</p>
<p>jourprop   = *(</p>
<p class="center">the following are optional, but MUST NOT occur more than once</p>
<p class="center"><a href="#CLASS">class</a> / <a href="#CREATED">created</a> / <a href="#DESCRIPTION">description</a> / <a href="#DTSTART">dtstart</a> / </p>
<p class="center"><a href="#DTSTAMP">dtstamp</a> / <a href="#LAST-MODIFIED">last-mod</a> / <a href="#ORGANIZER">organizer</a> / <a href="#RECURRENCE-ID">recurid</a> / </p>
<p class="center"><a href="#SEQUENCE">seq</a> / <a href="#STATUS">status</a> / <a href="#SUMMARY">summary</a> /<a href="#UID">uid</a> / <a href="#URL">url</a> /</p>
<p class="center">the following are optional,and MAY occur more than once</p>
<p class="center"><a href="#ATTACH">attach</a> / <a href="#ATTENDEE">attendee</a> / <a href="#CATEGORIES">categories</a> / <a href="#COMMENT">comment</a> /</p>
<p class="center"><a href="#CONTACT">contact</a> / <a href="#EXDATE">exdate</a> / <a href="#EXRULE">exrule</a> / <a href="#RELATED-TO">related</a> / </p>
<p class="center"><a href="#RDATE">rdate</a> / <a href="#RRULE">rrule</a> / <a href="#REQUEST-STATUS">rstatus</a> / <a href="#X-PROPERTY_PROP">x-prop</a></p>
<p>)</p>

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<a name="VFREEBUSY"></a><h2>2.5  VFREEBUSY</h2>
<p class="center">&quot;BEGIN&quot; &quot;:&quot; &quot;VFREEBUSY&quot; CRLF</p>
<p class="center">fbprop</p>
<p class="center">&quot;END&quot; &quot;:&quot; &quot;VFREEBUSY&quot; CRLF</p>
<p>fbprop     = *(</p>
<p class="center">the following are optional, but MUST NOT occur more than once</p>
<p class="center"><a href="#CONTACT">contact</a> / <a href="#DTSTART">dtstart</a> / <a href="#DTEND">dtend</a> / <a href="#DURATION">duration</a> / </p>
<p class="center"><a href="#DTSTAMP">dtstamp</a> / <a href="#ORGANIZER">organizer</a> / <a href="#UID">uid</a> / <a href="#URL">url</a> / </p>
<p class="center">the following are optional,and MAY occur more than once</p>
<p class="center"><a href="#ATTENDEE">attendee</a> / <a href="#COMMENT">comment</a> / <a href="#FREEBUSY_PROP">freebusy</a> / <a href="#REQUEST-STATUS">rstatus</a> / <a href="#X-PROPERTY_PROP">x-prop</a></p>
<p>)</p>

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<a name="VALARM"></a><h2>2.6  VALARM</h2>
<p class="center">&quot;BEGIN&quot; &quot;:&quot; &quot;VALARM&quot; CRLF</p>
<p class="center">(audioprop / dispprop / emailprop / procprop)</p>
<p class="center">&quot;END&quot; &quot;:&quot; &quot;VALARM&quot; CRLF</p>
<p>audioprop  = 2*(</p>
<p class="center">&quot;<a href="#ACTION">action</a>&quot; and &quot;<a href="#TRIGGER">trigger</a>&quot; are both REQUIRED, but MUST NOT occur more than once</p>
<p class="center"><a href="#ACTION">action</a> / <a href="#TRIGGER">trigger</a> /</p>
<p class="center">&quot;<a href="#DURATION">duration</a>&quot; and &quot;<a href="#REPEAT">repeat</a>&quot; are both optional,and MUST NOT occur more than once each,</p>
<p class="center">but if one occurs, so MUST the other</p>
<p class="center"><a href="#DURATION">duration</a> / <a href="#REPEAT">repeat</a> /</p>
<p class="center">the following is optional, but MUST NOT occur more than once</p>
<p class="center"><a href="#ATTACH">attach</a> / </p>
<p class="center">the following is optional, and MAY occur more than once</p>
<p class="center"><a href="#X-PROPERTY_PROP">x-prop</a></p>
<p>)</p>

<p>dispprop   = 3*(</p>
<p class="center">the following are all REQUIRED, but MUST NOT occur more than once</p>
<p class="center"><a href="#ACTION">action</a> / <a href="#DESCRIPTION">description</a> / <a href="#TRIGGER">trigger</a> /</p>
<p class="center">&quot;<a href="#DURATION">duration</a>&quot; and &quot;<a href="#REPEAT">repeat</a>&quot; are both optional,and MUST NOT occur more than once each,</p>
<p class="center">but if one occurs, so MUST the other</p>
<p class="center"><a href="#DURATION">duration</a> / <a href="#REPEAT">repeat</a> /</p>
<p class="center">the following is optional, and MAY occur more than once</p>
<p class="center"><a href="#X-PROPERTY_PROP">x-prop</a></p>
<p>)</p>

<p>emailprop  = 5*(</p>
<p class="center">the following are all REQUIRED, but MUST NOT occur more than once</p>
<p class="center"><a href="#ACTION">action</a> / <a href="#DESCRIPTION">description</a> / <a href="#TRIGGER">trigger</a> / <a href="#SUMMARY">summary</a></p>
<p class="center">the following is REQUIRED, and MAY occur more than once</p>
<p class="center"><a href="#ATTENDEE">attendee</a> / </p>
<p class="center">&quot;<a href="#DURATION">duration</a>&quot; and &quot;<a href="#REPEAT">repeat</a>&quot; are both optional, and MUST NOT occur more than once each,</p>
<p class="center">but if one occurs, so MUST the other</p>
<p class="center"><a href="#DURATION">duration</a> / <a href="#REPEAT">repeat</a> /</p>
<p class="center">the following are optional, and MAY occur more than once</p>
<p class="center"><a href="#ATTACH">attach</a> / <a href="#X-PROPERTY_PROP">x-prop</a></p>
<p>)</p>

<p>procprop   = 3*(</p>
<p class="center">the following are all REQUIRED, but MUST NOT occur more than once</p>
<p class="center"><a href="#ACTION">action</a> / <a href="#ATTACH">attach</a> / <a href="#TRIGGER">trigger</a> /</p>
<p class="center">&quot;<a href="#DURATION">duration</a>&quot; and &quot;<a href="#REPEAT">repeat</a>&quot; are both optional, and MUST NOT occur more than once each,</p>
<p class="center">but if one occurs, so MUST the other</p>
<p class="center"><a href="#DURATION">duration</a> /
<a href="#REPEAT">repeat</a> /</p>
<p class="center">&quot;<a href="#DESCRIPTION">description</a>&quot; is optional, and MUST NOT occur more than once</p>
<p class="center"><a href="#DESCRIPTION">description</a> / </p>
<p class="center">the following is optional, and MAY occur more than once</p>
<p class="center"><a href="#X-PROPERTY_PROP">x-prop</a></p>
<p>)</p>

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<a name="VTIMEZONE"></a><h2>2.7  VTIMEZONE</h2>
<p class="center">&quot;BEGIN&quot; &quot;:&quot; &quot;VTIMEZONE&quot; CRLF</p>
<p>2*(</p>
<p class="center">&quot;<a href="#TZID">tzid</a>&quot; is required, but MUST NOT occur more than once</p>
<p class="center"><a href="#TZID">tzid</a> / </p>
<p class="center">&quot;<a href="#LAST-MODIFIED">last-mod</a>&quot; and &quot;<a href="#TZURL">tzurl</a>&quot; are optional, but MUST NOT occur more than once</p>
<p class="center"><a href="#LAST-MODIFIED">last-mod</a> / <a href="#TZURL">tzurl</a> /</p>
<p class="center">one of &quot;standardc&quot; or &quot;daylightc&quot; MUST occur and each MAY occur more than once.</p>
<p class="center">standardc / daylightc /</p>
<p class="center">the following is optional, and MAY occur more than once</p>
<p class="center"><a href="#X-PROPERTY_PROP">x-prop</a></p>
<p>)</p>
<p class="center">&quot;END&quot; &quot;:&quot; &quot;VTIMEZONE&quot; CRLF</p>
<p class="center">standardc  = &quot;BEGIN&quot; &quot;:&quot; &quot;STANDARD&quot; CRLF</p>
<p class="center">tzprop</p>
<p class="center">&quot;END&quot; &quot;:&quot; &quot;STANDARD&quot; CRLF</p>
<p class="center">daylightc  = &quot;BEGIN&quot; &quot;:&quot; &quot;DAYLIGHT&quot; CRLF</p>
<p class="center">tzprop</p>
<p class="center">&quot;END&quot; &quot;:&quot; &quot;DAYLIGHT&quot; CRLF</p>

<p>tzprop     = 3*(</p>
<p class="center">the following are each REQUIRED, but MUST NOT occur more than once</p>
<p class="center"><a href="#DTSTART">dtstart</a> / <a href="#TZOFFSETTO">tzoffsetto</a> / <a href="#TZOFFSETFROM">tzoffsetfrom</a> /</p>
<p class="center">the following are optional, and MAY occur more than once</p>
<p class="center"><a href="#COMMENT">comment</a> /<a href="#RDATE">rdate</a> / <a href="#RRULE">rrule</a> / <a href="#TZNAME">tzname</a> / <a href="#X-PROPERTY_PROP">x-prop</a></p>
<p>)</p>

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<a name="CalProps"></a><h2>2.8  Component Properties</h2>
<p>
A comprehensive table showing relation between <strong>calendar</strong> components and properties.
<a href="#VTIMEZONE">vtimezone</a> properties are not included.
</p>
<table>
<tr>
<td>0-1</td>
<td colspan="8">OPTIONAL property, MUST NOT occur more than once.</td>
</tr>
<tr>
<td>0-m</td>
<td colspan="8">OPTIONAL property, MAY occur more than once.</td>
</tr>
<tr>
<td>0&nbsp;/&nbsp;1=1</td>
<td colspan="8">A pair of OPTIONAL properties, MUST NOT occur more than once each.<br>If one occurs, so MUST the other</td>
</tr>
<tr>
<td>0*1</td>
<td colspan="8">A pair of OPTIONAL properties, MUST NOT occur more than once each.<br>If one occurs, so MUST NOT the other</td>
</tr>
<tr>
<td>1-m</td>
<td colspan="8">REQUIRED property, MAY occur more than once.</td>
</tr>
<tr>
<td>1</td>
<td colspan="8">REQUIRED property, MUST NOT occur more than once.</td>
</tr>
<tr>
<td colspan="9">&nbsp;</td>
</tr>
<tr>
<td>&nbsp;</td>
<td class="bl bb center top" rowspan="2"><a class="ref" href="#VEVENT">v<br>e<br>v<br>e<br>n<br>t</a></td>
<td class="bl bb center top" rowspan="2"><a class="ref" href="#VTODO">v<br>t<br>o<br>d<br>o</a></td>
<td class="bl bb center top" rowspan="2"><a class="ref" href="#VJOURNAL">v<br>j<br>o<br>u<br>r<br>n<br>a<br>l</a></td>
<td class="bl bb center top" rowspan="2"><a class="ref" href="#VFREEBUSY">v<br>f<br>r<br>e<br>e<br>b<br>u<br>s<br>y</a></td>
<td class="bl top center" colspan="4"><a class="ref" href="#VALARM">v&nbsp;a&nbsp;l&nbsp;a&nbsp;r&nbsp;m</a></td>
</tr>
<tr>
<td class="bb">&nbsp;</td>
<td class="bl bb center ref"><br><br><br><br>a<br>u<br>d<br>i<br>o</td>
<td class="bl bb center ref"><br><br>d<br>i<br>s<br>p<br>l<br>a<br>y</td>
<td class="bl bb center ref"><br><br><br><br>e<br>m<br>a<br>i<br>l</td>
<td class="bl bb center ref">p<br>r<br>o<br>c<br>e<br>d<br>u<br>r<br>e</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#ACTION">action</a></td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">1</td>
<td class="blb">1</td>
<td class="blb">1</td>
<td class="blb">1</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#ATTACH">attach</a></td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">&nbsp;</td>
<td class="blb">0-1</td>
<td class="blb">&nbsp;</td>
<td class="blb">0-m</td>
<td class="blb">1</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#ATTENDEE">attendee</a></td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">1-m</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#CATEGORIES">categories</a></td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#CLASS">class</a></td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#COMMENT">comment</a></td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#COMPLETED">completed</a></td>
<td class="blb">&nbsp;</td>
<td class="blb">0-1</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#CONTACT">contact</a></td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">0-1</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#CREATED">created</a></td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#DESCRIPTION">description</a></td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">0-m</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">1</td>
<td class="blb">1</td>
<td class="blb">0-1</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#DTEND">dtend</a></td>
<td class="blb">0*1</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">0-1</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#DTSTAMP">dtstamp</a></td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#DTSTART">dtstart</a></td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#DUE">due</a></td>
<td class="blb">&nbsp;</td>
<td class="blb">0*1</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#DURATION">duration</a></td>
<td class="blb">0*1</td>
<td class="blb">0*1</td>
<td class="blb">&nbsp;</td>
<td class="blb">0-1</td>
<td class="blb">0&nbsp;/&nbsp;1=1</td>
<td class="blb">0&nbsp;/&nbsp;1=1</td>
<td class="blb">0&nbsp;/&nbsp;1=1</td>
<td class="blb">0&nbsp;/&nbsp;1=1</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#EXDATE">exdate</a></td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#EXRULE">exrule</a></td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#FREEBUSY_PROP">freebusy</a></td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">0-m</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#GEO">geo</a></td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#LAST-MODIFIED">last-mod</a></td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb"></td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#LOCATION">location</a></td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#ORGANIZER">organizer</a></td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#PERCENT-COMPLETE">percent</a></td>
<td class="blb">&nbsp;</td>
<td class="blb">0-1</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#PRIORITY">priority</a></td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#RDATE">rdate</a></td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#RECURRENCE-ID">recurid</a></td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#RELATED-TO">related</a></td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#REPEAT">repeat</a></td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">0&nbsp;/&nbsp;1=1</td>
<td class="blb">0&nbsp;/&nbsp;1=1</td>
<td class="blb">0&nbsp;/&nbsp;1=1</td>
<td class="blb">0&nbsp;/&nbsp;1=1</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#RESOURCES">resources</a></td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#RRULE">rrule</a></td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#REQUEST-STATUS">rstatus</a></td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#SEQUENCE">sequence</a></td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#STATUS">status</a></td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#SUMMARY">summary</a></td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">1</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#TRANSP">transp</a></td>
<td class="blb">0-1</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#TRIGGER">trigger</a></td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">1</td>
<td class="blb">1</td>
<td class="blb">1</td>
<td class="blb">1</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#UID">uid</a></td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#URL">url</a></td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">0-1</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
<td class="blb">&nbsp;</td>
</tr>
<tr>
<td class="bb"><a class="ref" href="#X-PROPERTY_PROP">x-prop</a></td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
<td class="blb">0-m</td>
</tr>
</table>
<p>
If not set, the <a href="#DTSTAMP">DTSTAMP</a> and <a href="#UID">UID</a> properties
are automatically created by iCalcreator<br>
for <a href="#VEVENT">vevent</a>,<a href="#VTODO">vtodo</a>, <a href="#VJOURNAL">vjournal</a> and <a href="#VFREEBUSY">vfreebusy</a> components<br>
when using <strong>calendar</strong> functions <a href="#saveCalendar">saveCalendar</a> or <a href="#returnCalendar">returnCalendar</a><br>
or when fetching <a href="#DTSTAMP">DTSTAMP</a>/<a href="#UID">UID</a> property value with the component function <a href="#getProperty_PROP">getProperty</a>.
</p>
<br>
<a href="#INDEX">[index]</a> <a href="#top">[top]</a> <a href="#Calendar_Component_list">[up]</a>

<a name="Function_list"></a><h1>3. Function list</h1>

<a name="Calendar_object_functions"></a><h2>3.1 Calendar object functions</h2>

<a name="Calendar_object_constructors"></a><h3>3.1.1 Constructors</h3>
<a name="vcalendar"></a><h4>3.1.1.1 vcalendar</h4>
<p>Create a new <a href="#VCALENDAR">VCALENDAR</a> object.</p>
<p class="label">Format</p>
<p class="format">vcalendar()</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; => &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
...
</p>
<br>
<a href="#INDEX">[index]</a> <a href="#top">[top]</a> <a href="#Function_list">[up]</a>


<a name="vevent"></a><h4>3.1.1.2 vevent</h4>
<p class="label">Format 1</p>
<p>Create a new <a href="#VEVENT">VEVENT</a> object using a <strong>calendar</strong> factory-method, returning a reference to the new component.</p>
<p class="format">newComponent( &quot;vevent&quot; )</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; => &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
...
$vevent = &amp; $vcalendar->newComponent( &quot;vevent&quot; );
$vevent->setProperty(...
...
</p>
<p class="label">Format 2</p>
<p>Create a new <a href="#VEVENT">VEVENT</a> object.</p>
<p class="format">vevent()</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; => &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
...
$vevent = new vevent();
$vevent->setProperty(...
...
$vcalendar->setComponent( $vevent );
...
</p>
<br>
<a href="#INDEX">[index]</a> <a href="#top">[top]</a> <a href="#Function_list">[up]</a>


<a name="vtodo"></a><h4>3.1.1.3 vtodo</h4>
<p class="label">Format 1</p>
<p>Create a new <a href="#VTODO">VTODO</a> object using a <strong>calendar</strong> factory-method, returning a reference to the new component.</p>
<p class="format">newComponent( &quot;vtodo&quot; )</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; => &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
...
$vtodo = &amp; $vcalendar->newComponent( &quot;vtodo&quot; );
$vtodo->setProperty(...
...
</p>
<p class="label">Format 2</p>
<p>Create a new <a href="#VTODO">VTODO</a> object.</p>
<p class="format">vtodo()</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; => &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
...
$vtodo = new vtodo();
$vtodo->setProperty(...
...
$vcalendar->setComponent( $vtodo );
...
</p>
<br>
<a href="#INDEX">[index]</a> <a href="#top">[top]</a> <a href="#Function_list">[up]</a>


<a name="vjournal"></a><h4>3.1.1.4 vjournal</h4>
<p class="label">Format 1</p>
<p>Create a new <a href="#VJOUNAL">VJOURNAL</a> object using a <strong>calendar</strong> factory-method, returning a reference to the new component.</p>
<p class="format">newComponent( &quot;vjournal&quot; )</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; => &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
...
$vjournal = &amp; $vcalendar->newComponent( &quot;vjournal&quot; );
$vjournal->setProperty(...
...
</p>
<p class="label">Format 2</p>
<p>Create a new <a href="#VJOURNAL">VJOURNAL</a> object.</p>
<p class="format">vjournal()</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; => &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
...
$vjournal = new vjournal();
$vjournal->setProperty(...
...
$vcalendar->setComponent( $vjournal );
...
</p>
<br>
<a href="#INDEX">[index]</a> <a href="#top">[top]</a> <a href="#Function_list">[up]</a>


<a name="vfreebusy"></a><h4>3.1.1.5 vfreebusy</h4>
<p class="label">Format 1</p>
<p>Create a new <a href="#VFREEBUSY">VFREEBUSY</a> object using a <strong>calendar</strong> factory-method, returning a reference to the new component.</p>
<p class="format">newComponent( &quot;vfreebusy&quot; )</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; => &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
...
$vfreebusy = &amp; $vcalendar->newComponent( &quot;vfreebusy&quot; );
$vfreebusy->setProperty(...
...
</p>
<p class="label">Format 2</p>
<p>Create a new <a href="#VFREEBUSY">VFREEBUSY</a> object.</p>
<p class="format">vfreebusy()</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; => &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
...
$vfreebusy = new vfreebusy();
$vfreebusy->setProperty(...
...
$vcalendar->setComponent( $vfreebusy );
...
</p>
<br>
<a href="#INDEX">[index]</a> <a href="#top">[top]</a> <a href="#Function_list">[up]</a>


<a name="valarm"></a><h4>3.1.1.6 valarm</h4>
<p class="label">Format 1</p>
<p>Create a new <a href="#VALARM">VALARM</a> object using a component factory-method, returning a reference to the new (sub-)component.</p>
<p class="format">newComponent( &quot;valarm&quot; )</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; => &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
...
$vevent = &amp; $vcalendar->newComponent( &quot;vevent&quot; );
$vevent->setProperty(...
...
$valarm = &amp; $vevent->newComponent( &quot;valarm&quot; );
$valarm->setProperty(...
...
</p>
<p class="label">Format 2</p>
<p>Create a new <a href="#VALARM">VALARM</a> object.</p>
<p class="format">valarm()</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; => &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
...
$vevent = new vevent();
$vevent->setProperty(...
...
$valarm = new valarm();
$valarm->setProperty(...
...
$vevent->setComponent( $valarm );
...
$vcalendar->setComponent( $vevent );
...
</p>
<br>
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<a name="vtimezone"></a><h4>3.1.1.7 vtimezone</h4>
<p>
The vtimezone component describe, at a minimum, the base offset from <b>UTC</b> for the time zone.
For dates with UTC DATE-TIME, read <a href="#DATE_WITH_UTC_TIME">this</a>!
</p>
<p class="label">Format 1</p>
<p>Create a new <a href="#VTIMEZONE">VTIMEZONE</a> object using a <strong>calendar</strong> factory-method, returning a reference to the new component.</p>
<p class="format">newComponent( &quot;vtimezone&quot; )</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; => &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
...
$vtimezone = &amp; $vcalendar->newComponent( &quot;vtimezone&quot; );
$vtimezone->setProperty(...
...
</p>
<p class="label">Format 2</p>
<p>Create a new <a href="#VTIMEZONE">VTIMEZONE</a> object.</p>
<p class="format">vtimezone()</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; => &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
...
$vtimezone = new vtimezone();
$vtimezone->setProperty(...
...
$vcalendar->setComponent( $vtimezone );
...
</p>
<br>
<h5>Creation of timezone components</h5>
<p>
It is possible to create timezone components, using a function in iCalUtilityFunctions class, <a href="#createTimezone">createTimezone</a>
and utilizing The <em>PHP</em> DateTimeZone class (<em>PHP</em> 5 >= 5.2.0).
</p>
<br>
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<a name="standard"></a><h4>3.1.1.8 standard</h4>
<p class="label">Format 1</p>
<p>Create a new <a href="#VTIMEZONE">VTIMEZONE</a> <b>standard</b> object using a component factory-method, returning a reference to the new (sub-)component.</p>
<p class="format">newComponent( &quot;standard&quot; )</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; => &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
...
$vtimezone = &amp; $vcalendar->newComponent( &quot;vtimezone&quot; );
$vtimezone->setProperty(...
...
$standard = &amp; $vtimezone->newComponent( &quot;standard&quot; );
$standard->setProperty(...
...
$daylight = &amp; $vtimezone->newComponent( &quot;daylight&quot; );
$daylight->setProperty(...
...
</p>
<p class="label">Format 2</p>
<p>Create a new <a href="#VTIMEZONE">VTIMEZONE</a> STANDARD object.</p>
<p class="format">vtimezone( &quot;standard&quot; )</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; => &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
...
$vtimezone = new vtimezone();
$vtimezone->setProperty(...
...
$standard = new vtimezone( &quot;standard&quot; );
$standard->setProperty(...
...
$vtimezone->setComponent( $standard );
...
$daylight = new vtimezone( &quot;daylight&quot; );
$daylight->setProperty(...
...
$vtimezone->setComponent( $daylight );
...
$vcalendar->setComponent( $vtimezone );
...
</p>
<br>
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<a name="daylight"></a><h4>3.1.1.9 daylight</h4>
<p class="label">Format 1</p>
<p>Create a new <a name="VTIMEZONE">VTIMEZONE</a> <b>daylight</b> object using a component factory-method, returning a reference to the new (sub-)component.</p>
<p class="format">newComponent( &quot;standard&quot; )</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; => &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
...
$vtimezone = &amp; $vcalendar->newComponent( &quot;vtimezone&quot; );
...
$standard = &amp; $vtimezone->newComponent( &quot;standard&quot; );
...
$daylight = &amp; $vtimezone->newComponent( &quot;daylight&quot; );
...
</p>
<p class="label">Format 2</p>
<p>Create a new <a href="#VTIMEZONE">VTIMEZONE</a> DAYLIGHT object.</p>
<p class="format">vtimezone( &quot;daylight&quot; )</p>
<p class="label">Example</p>
<p class="example"></p>
<p class="example">$config = array( &quot;unique_id&quot; => &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
...
$vtimezone = new vtimezone();
...
$standard = new vtimezone( &quot;standard&quot; );
...
$vtimezone->setComponent( $standard );
$daylight = new vtimezone( &quot;daylight&quot; );
...
$vtimezone->setComponent( $daylight );
$vcalendar->setComponent( $vtimezone );
...
</p>
<br>
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<a name="Calendar_property_functions"></a><h3>3.1.2 Calendar property functions</h3>

<a name="deleteProperty"></a><h4>3.1.2.1 deleteProperty</h4>
<p>Generic <strong>calendar</strong> deleteProperty function, simplifying removal of <strong>calendar</strong> properties.</p>
<p>FALSE is returned if no property exists or when end-of-properties at consecutive function calls.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( [ PropName [, order=1 ] )</p>
<p class="comment">propName = (string) case independent, rfc2445 component property names,
                    unknown/missing propName will be regarded as <a href="#X-PROPERTY">X-property</a>.
order    = (int) if missing 1st/next occurrence,
                 used with multiple (property) occurrences
</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;, &quot;filename&quot; =&gt; &quot;file.ics&quot;);
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
if( !$vcalendar->deleteProperty( &quot;method&quot; ))
&nbsp;&nbsp;echo "METHOD property not found";
.. .
</p>
<br>
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<a name="getProperty"></a><h4>3.1.2.2 getProperty</h4>
<p class="label">Format 1</p>
<p>Generic <strong>calendar</strong> getProperty function, simplifying fetch of <strong>calendar</strong> properties.</p>
<p>FALSE is returned if no property exists or when end-of-properties at consecutive function calls.</p>
<p class="format">getProperty( [ PropName [, order=1 [, complete=FALSE ]]] )</p>
<p class="comment">propName = (string) case independent, rfc2445 component property names,
         unknown/missing propName will be regarded as <a href="#X-PROPERTY">X-property</a>.
order    = (int) if missing 1st/next occurrence,
           used with multiply (property) occurrences
complete = (bool) FALSE (default) : output only property value
                  TRUE            : output =
      array( &quot;value&quot;=&gt; &lt;value&gt; ,&quot;params&quot; =&gt; &lt;parameter array&gt;)
</p>
<p class="label">Example 1</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;, &quot;filename&quot; =&gt; &quot;file.ics&quot;);
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
$calscale = $vcalendar->getProperty( &quot;calscale&quot; );
.. .
</p>
<p class="label">Example 2</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;, &quot;filename&quot; =&gt; &quot;file.ics&quot;);
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
while( $xprop = $vcalendar->getProperty( )) { // <span class="ref">get x-properties</span>
.. .
</p>
<a name="getProperty2"></a>
<p class="label">Format 2</p>
<p>
Ability to fetch specific property (unique) values and number of occurrences. Supported properties are
<a href="#ATTENDEE">ATTENDEE</a>, <a href="#CATEGORIES">CATEGORIES</a>, <a href="#DTSTART">DTSTART</a>, <a href="#LOCATION">LOCATION</a>, <a href="#ORGANIZER">ORGANIZER</a>, <a href="#PRIORITY">PRIORITY</a>, <a href="#RESOURCES">RESOURCES</a>,
<a href="#STATUS">STATUS</a>, <a href="#SUMMARY">SUMMARY</a>, <a href="#UID">UID</a> or &quot;RECURRENCE-ID-UID&quot; (alt. &quot;R-UID&quot; ).
The search includes in <b>ALL</b> components within <strong>calendar</strong>.
</p>
<p>
Outputs an array( *[ (string) unique-property-value =&gt; (int) number_of_occurrence ] )<br>or an empty array if no hits.
The array is sorted by (asc.) key.
</p>
<p>
If a property contains multiple values (ex. &quot;CATAGORIES:course1,courseB&quot or &quot;RESOURCES:pc,developer&quot;), they are split into unique values.
</p>
<p>To select components based on property values, see <a href="#selectComponents2">selectComponents</a> (Format 2).</p>
<p class="format">getProperty( PropName )</p>
<p class="comment">propName = (string) case independent, property name

Using <a href="#DTSTART">DTSTART</a> as argument returns dates in format &quot;YYYYMMDD&quot; (please note, except
the origin start date (<a href="#DTSTART">DTSTART</a>), dates within a RDATE/RRULE recurrence set are NOT
included).

Using &quot;RECURRENCE-ID-UID&quot;returns <a href="#UID">UID</a> values for component(-s) where <a href="#RECURRENCE-ID">RECURRENCE-ID</a>
is set.

The <a href="#ATTENDEE">ATTENDEE</a> and <a href="#ORGANIZER">ORGANIZER</a> values are prefixed by &quot;protocol&quot; like
&quot;MAILTO:hide@address.com&quot;.
</p>
<p class="label">Example 1</p>
<p>Fetch all attendees in <strong>calendar</strong>.</p>
<p class="example">.. .
$attendees = $vcalendar->getProperty( &quot;ATTENDEE&quot; );
foreach( $attendees as $attendee => $occurrCount ) {
.. .
</p>
<p class="label">Example 2</p>
<p>Fetch all DTSTARTs in <strong>calendar</strong>.</p>
<p class="example">.. .
$startDates = $vcalendar->getProperty( &quot;DTSTART&quot; );
foreach( $startDates as $startDate => $occurrCount ) {
.. .
</p>
<br>
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<a name="setProperty"></a><h4>3.1.2.3 setProperty</h4>
<p>Generic <strong>calendar</strong> setProperty function,simplifying insert of <strong>calendar</strong> properties.</p>
<p>A successful update returns TRUE.</p>
<p class="label">Format</p>
<p class="format">setProperty( PropName, Proparg_1 *[, Proparg_n] )</p>
<p class="comment">propName = (string) case independent, strict rfc2445 <strong>calendar</strong> property names,
                                      unknown propName will be regarded as <a href="#X-PROPERTY">X-property</a>.
Proparg  = (mixed) property argument
</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;, &quot;filename&quot; =&gt; &quot;file.ics&quot;);
$vcalendar = new vcalendar( $config ); // <span class="ref">initiate new CALENDAR</span>
$vcalendar->setProperty( &quot;calscale&quot;, &quot;GREGORIAN&quot; );
</p>
<br>
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<a name="CALSCALE"></a><h4>3.1.2.4 CALSCALE</h4>
<p>
This property defines the <strong>calendar</strong> scale used for the <strong>calendar</strong> information specified in the <strong>iCalendar</strong> object.
</p>
<p>
The default value is &quot;GREGORIAN&quot;, implied when missing.
</p>
<h5>Create CALSCALE</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createCalscale()</p>
<p class="label">Example</p>
<p class="example">$vcalendar->createCalscale();</p>
<h5>Delete CALSCALE</h5>
<p>Remove CALSCALE from calendar.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;calscale&quot; )</p>
<p class="label">Example</p>
<p class="example">$vcalendar->deleteProperty( &quot;CALSCALE&quot; );</p>
<h5>Get Calscale</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">getProperty( &quot;calscale&quot; )</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;, &quot;filename&quot; =&gt; &quot;file.ics&quot;);
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
$calscale = $vcalendar->getProperty( &quot;calscale&quot; );
.. .
</p>
<h5>Set CALSCALE</h5>
<p>Insert property value.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;calscale&quot;, value )</p>
<p class="comment">value = (string) calscale value</p>
<p class="label">Example</p>
<p class="example">
$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config ); // <span class="ref">initiate new CALENDAR</span>
$vcalendar->setProperty( &quot;calscale&quot;, &quot;GREGORIAN&quot; );
.. .
</p>
<br>
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<a name="METHOD"></a><h4>3.1.2.5 METHOD</h4>
<p>
This property defines the <strong>iCalendar</strong> object method associated with the <strong>calendar</strong> object.
</p>
<p>
METHOD property (value PUBLISH etc.) may be required when importing iCal files
into some calendaring software (MS etc.), as well as <a href="#X-PROPERTY">x-properties</a>
"X-WR-CALNAME", "X-WR-CALDESC" and "X-WR-TIMEZONE"
and the (automatically created) <a href="#DTSTAMP">DTSTAMP</a> and <a href="#UID">UID</a> properties.
</p>
<h5>Create METHOD</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createMethod()</p>
<p class="label">Example</p>
<p class="example">$vcalendar->createMethod();</p>
<h5>Delete METHOD</h5>
<p>Remove METHOD from calendar.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;METHOD&quot; )</p>
<p class="label">Example</p>
<p class="example">$vcalendar->deleteProperty( &quot;METHOD&quot; );</p>
<h5>Get METHOD</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">getProperty( &quot;method&quot; );</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;);
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
$method = $vcalendar->getProperty( &quot;method&quot; )
.. .
</p>
<h5>Set METHOD</h5>
<p>Insert property value.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;method&quot;, value )</p>
<p class="comment">value = (string) method value</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config ); // <span class="ref">initiate new CALENDAR</span>
$vcalendar->setProperty( &quot;method&quot;, &quot;PUBLISH&quot; )
</p>
<br>
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<a name="VERSION"></a><h4>3.1.2.6 VERSION</h4>
<p>
This property specifies the identifier corresponding to the version number of the <strong>iCalendar</strong> specification.
This property is always placed first in the <strong>calendar</strong> file.
</p>
<h5>Create Version</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createVersion()</p>
<p class="label">Example</p>
<p class="example">$vcalendar->createVersion();</p>
<h5>Get Version</h5>
<p>Fetch property value.</p>
<p class="label">Format</p>
<p class="format">getProperty( &quot;version&quot; )</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;, &quot;filename&quot; =&gt; &quot;file.ics&quot;);
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
$version = $vcalendar->getProperty( &quot;version&quot; )
.. .
</p>
<h5>Set Version</h5>
<p>Insert property value.
Only version 2.0 valid, version is <b>AUTO</b> generated at <strong>calendar</strong> creation.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;version&quot;, version )</p>
<p class="comment">version = (string) iCal version</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config ); // <span class="ref">initiate new CALENDAR</span>
$vcalendar->setProperty( &quot;version&quot;, &quot;2.0&quot; )
</p>
<br>
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<a name="X-PROPERTY"></a><h4>3.1.2.7 X-PROPERTY</h4>
<p>
A <strong>calendar</strong>, non-standard property with a TEXT value and a name with an &quot;X-&quot; prefix. In a <strong>calendar</strong>,
an x-property, with an unique name, can occur only once but the number of x-properties are unlimited.
</p>
<p>
X-properties "X-WR-CALNAME", "X-WR-CALDESC" and "X-WR-TIMEZONE"  may be required when importing iCal files
into some calendaring software (MS etc.), as well as <a href="#METHOD">METHOD</a> property (value PUBLISH etc.)
and the (automatically created) <a href="#DTSTAMP">DTSTAMP</a> and <a href="#UID">UID</a> properties.
</p>
<p>The value type is TEXT.</p>
<h5>Create X-property</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createXprop()</p>
<p class="label">Example</p>
<p class="example">$vcalendar->createXprop();</p>
<h5>Delete X-PROPERTY</h5>
<p>Remove X-PROPERTY from <strong>calendar</strong>.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;&lt;X-PROPERTY&gt;&quot; )</p>
<p class="label">Example 1</p>
<p>Delete the x-property named &quot;X-PROPERTY&quot;.</p>
<p class="example">$vcalendar->deleteProperty( &quot;X-PROPERTY&quot; );</p>
<p class="label">Example 2</p>
<p>Delete all x-properties.</p>
<p class="example">while( $vcalendar->deleteProperty())
  continue;</p>
<h5>Get X-PROPERTY</h5>
<p>If set, returns property (name and) value, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">getProperty()</p>
<p class="format">getProperty( &quot;&lt;X-PROPERTY&gt;&quot; )</p>
<p class="comment">output = array( propertyName<span class="ref">1</span>, propertyData<span class="ref">2</span> )</p>
<p class="format">getProperty( FALSE, propOrderNo/FALSE, TRUE )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">output = array( propertyName<span class="ref">1</span>
              , array( &quot;value&quot;  =&gt; propertyData<span class="ref">2</span> )
                     , &quot;params&quot; =&gt; params<span class="ref">&nbsp;3</span>))
</p>
<p class="label">Example 1</p>
<p>Read all x-prop values in a loop.</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;, &quot;filename&quot; =&gt; &quot;file.ics&quot;);
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
while( $xprop = $vcalendar->getProperty( )) {
.. .
</p>
<p class="comment">$xprop = array( propertyName<span class="ref">1</span>, propertyData<span class="ref">2</span> )</p>
<p class="label">Example 2</p>
<p>If exists, read X-WR-TIMEZONE x-prop</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;, &quot;filename&quot; =&gt; &quot;file.ics&quot;);
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
if( $xprop = $vcalendar->getProperty( &quot;X-WR-TIMEZONE&quot; )) {
.. .
</p>
<p class="comment">$xprop = array( &quot;X-WR-TIMEZONE&quot;, propertyData<span class="ref">2</span> )</p>
<p class="label">Example 3</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;, &quot;filename&quot; =&gt; &quot;file.ics&quot;);
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
while( $xprop = $vcalendar->getProperty( FALSE, FALSE, TRUE )) {
.. .
</p>
<p class="comment">$xprop = array( propertyName<span class="ref">1</span>
              , array( &quot;value &quot; =&gt; propertyData<span class="ref">2</span> )
                     , &quot;params &quot;=&gt; params<span class="ref">&nbsp;3</span> )
</p>
<h5>Set X-PROPERTY</h5>
Insert property name and value. If an x-prop with the same name already exists, it will be replaced.
PropertyNames are always stored upperCase, ex. x-wr-calname =&gt; X-WR-CALNAME.
<p class="label">Format</p>
<p class="format">setProperty( propertyName, propertyData [, params ] )</p>
<p class="comment">propertyName<span class="ref">1</span> = (string) Any property name with a &quot;X-&quot; prefix
propertyData<span class="ref">2</span> = (string) Value type TEXT
params<span class="ref">3</span>       = (array) ( [&quot;LANGUAGE&quot; =&gt; (string) &quot;&lt;lang&gt;&quot;] [, xparams] )
xparams       = *[ (string) xparamkey =&gt; (string) xparamvalue ]
propOrderNo   = (int) ordernumber, 1=1st, 2=2nd etc</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config ); // initiate new CALENDAR
 // <span class="ref">set some X-properties.. .</span>
$vcalendar->setProperty( &quot;x-wr-calname&quot;, &quot;Calendar Sample&quot; )
$vcalendar->setProperty( &quot;X-WR-CALDESC&quot;, &quot;Calendar Description&quot; );
$vcalendar->setProperty( &quot;X-WR-TIMEZONE&quot;, &quot;Europe/Stockholm&quot; );
</p>
<br>
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<a name="Calendar_component_functions"></a><h3>3.1.3 Calendar component functions</h3>

<a name="deleteComponent"></a><h4>3.1.3.1 deleteComponent</h4>
<p>
Remove component from <strong>calendar</strong>.<br>
FALSE is returned if no property exists or when end-of-properties at consecutive function calls.
</p>
<p class="label">format 1</p>
Remove component with order number (1st=1, 2nd=2.. .).
<p class="format">deleteComponent( orderNumber )</p>
<p class="comment">orderNumber = (int) order number</p>
<p class="label">format 2</p>
<P>Remove component with component type (e.g. &quot;vevent&quot;) and order 1 alt. suborder number.</p>
<p class="format">deleteComponent( componentType [, componentSuborderNumber])</p>
<p class="comment">componentType           = (string) component type
componentSuborderNumber = (int) order number</p>
<p class="label">format 3</p>
<p>Remove component with <a href="#UID">UID</a>. N.B <a href="#UID">UID</a> is NOT set for <a href="#VALARM">ALARM</a> / <a href="#VTIMEZONE">TIMEZONE</a> components.</p>
<p class="format">deleteComponent( <a href="#UID">UID</a> )</p>
<p class="label">Example 1</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;, &quot;filename&quot; =&gt; &quot;file.ics&quot;);
$vcal = new vcalendar( $config );
$vcal->parse();
$vcal->deleteComponent( 1 );
$vcal->deleteComponent( &quot;vtodo&quot;, 2 );
$vcal->deleteComponent( &quot;20070803T194810CEST-hide@address.com&quot;);
.. .
</p>
<p class="label">Example 2</p>
<p>Deleting all components, using format 2 without order number.</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;, &quot;filename&quot; =&gt; &quot;file.ics&quot;);
$vcal = new vcalendar( $config );
$vcal->parse();
.. .
while( $vcal->deleteComponent( &quot;vevent&quot;))
  continue;
.. .
$vtodo = $vcal->getComponent( &quot;vtodo&quot; );
while( $vtodo->deleteComponent( &quot;valarm&quot;))
  continue;
.. .
</p>
<br>
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<a name="getComponent"></a><h4>3.1.3.2 getComponent</h4>
<p>Get component from <strong>calendar</strong>.</p>
<p>FALSE is returned if no property exists or when end-of-properties at consecutive function calls.</p>

<p class="label">format 1</p>
<p>Get next component, until end-of-components.</p>
<p class="format">getComponent()</p>

<p class="label">format 2</p>
<P>Get specific component with order number (1st=1, 2nd=2.. .).</p>
<p class="format">getComponent( orderNumber )</p>
<p class="comment">orderNumber = (int) order number</p>

<p class="label">format 3</p>
<p>
Get (first/next) component with component type (until end-of-components) alt.
get specific component with component type and suborder number (1st=1, 2nd=2.. .).
</p>
<p class="format">getComponent( componentType [, componentSuborderNumber])</p>
<p class="comment">componentType           = (string) component type
componentSuborderNumber = (int) order number</p>

<p class="label">format 4</p>
<P>Get (first/next) component with <a href="#UID">UID</a> as key. (<a href="#UID">UID</a> is NOT set for <a href="#VALARM">ALARM</a> / <a href="#VTIMEZONE">TIMEZONE</a> components.)</p>
<p class="format">getComponent( <a href="#UID">UID</a> )</p>

<p class="label">format 5</p>
<p>Get (first/next) component based on specific property contents;
<a href="#DTSTART">DTSTART</a>, <a href="#DTEND">DTEND</a>, <a href="#DUE">DUE</a>, <a href="#CREATED">CREATED</a>, <a href="#COMPLETED">COMPLETED</a>, <a href="#DTSTAMP">DTSTAMP</a>, <a href="#LAST-MODIFIED">LAST-MODIFIED</a>, <a href="#RECURRENCE-ID">RECURRENCE-ID</a>,
<a href="#ATTENDEE">ATTENDEE</a>, <a href="#CATEGORIES">CATEGORIES</a>, <a href="#LOCATION">LOCATION</a>, <a href="#ORGANIZER">ORGANIZER</a>, <a href="#PRIORITY">PRIORITY</a>, <a href="#RESOURCES">RESOURCES</a>, <a href="#STATUS">STATUS</a>, <a href="#SUMMARY">SUMMARY</a>, <a href="#UID">UID</a>.
For the property &quot;SUMMARY&quot; ,if a search value (any case) exists within property value, a hit exists.
For the other, non-date, properties an exact (strict case) match is required.
</p>
<p>
Note, <a href="#ATTENDEE">ATTENDEE</a> and <a href="#ORGANIZER">ORGANIZER</a> values must be prefixed by protocol ex.&quot;MAILTO:hide@address.com&quot;.
</p>

<p class="format">getComponent( search )</p>
<p class="comment">
search       = (array) ( *[ propertyName =&gt; uniqueValue] )
propertyName = (string) property name, above
propertyData = (string) unique property value (strict case),
               date format &quot;YYYYMMDD&quot; (if any side is DATE, only dates are used),
               datetime format &quot;YYYYMMDDTHHMMSS&quot;</p>
<p class="label">Example 1</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;, &quot;filename&quot; =&gt; &quot;file.ics&quot;);
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
while( $comp = $vcalendar->getComponent()) {
.. .
}
.. .
</p>
<p class="label">Example 2</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;, &quot;filename&quot; =&gt; &quot;file.ics&quot;);
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
if( $comp = $vcalendar->getComponent( 1 )) {
.. .
}
.. .
</p>
<p class="label">Example 3</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;, &quot;filename&quot; =&gt; &quot;file.ics&quot;);
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
if( $comp = $vcalendar->getComponent( &quot;vtodo&quot;, 2 ) {
.. .
}
.. .
</p>
<p class="label">Example 4</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;, &quot;filename&quot; =&gt; &quot;file.ics&quot;);
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
$uid = &quot;20070803T194810CEST-hide@address.com&quot;;
if($comp = $vcalendar->getComponent( $uid ){
.. .
}
.. .
</p>
<br>
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<a name="newComponent"></a><h4>3.1.3.3 newComponent</h4>
<P>
Create component (<a href="#VEVENT">EVENT</a> / <a href="#VTODO">VTODO</a> / <a href="#VJOURNAL">VJOURNAL</a> / <a href="#VFREEBUSY">VFREEBUSY</a> / <a href="#VTIMEZONE">VTIMEZONE</a>)
using a <strong>calendar</strong> factory-method, returning a reference to the new component.
</p>
<p class="label">Format</p>
<p class="format">newComponent( componentType )</p>
<p class="comment">componentType = (string) component type</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; => &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
...
$vevent = &amp; $vcalendar->newComponent( &quot;vevent&quot; );
...
</p>

<br>
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<a name="selectComponents"></a><h4>3.1.3.4 selectComponents</h4>
<p class="label">Format 1</p>
<p>
Selects  <a href="#VEVENT">EVENT</a> / <a href="#VTODO">VTODO</a> / <a href="#VJOURNAL">VJOURNAL</a> / <a href="#VFREEBUSY">VFREEBUSY</a> components from <strong>calendar</strong> on based on <b>dates</b> (notice <a href="#date_restriction">date restriction</a>), based on the initial <a href="#DTSTART">DTSTART</a> property
along with the <a href="#RRULE">RRULE</a>, <a href="#RDATE">RDATE</a>, <a href="#EXDATE">EXDATE</a> and <a href="#EXRULE">EXRULE</a> properties in the component.
</p>
<p>Requirement:</p>
<ul>
<li>The property <a href="#DTSTART">DTSTART</a> is required.<br>If missing in a <a href="#VTODO">VTODO</a> component then <a href="#DTSTART">DUE</a> is used.<br>
<li><a href="#sort">sort</a> <b>MUST</b> be executed before &quot;selectComponents&quot;, notice example below.
</ul>
<p>Limitations:</p>
<ul>
<li>The values &quot;SECONDLY&quot; / &quot;MINUTELY&quot; / &quot;HOURLY&quot; in the &quot;FREQ&quot; rule part are NOT supported.
<li>If using components with properties<br>
<a href="#UID">UID</a> in combination with <a href="#SEQUENCE">SEQUENCE</a> and <a href="#RECURRENCE-ID">RECURRENCE-ID</a><br>
(i.e. an individual instance within the recurrence set),<br>
the <a href="#RECURRENCE-ID">RECURRENCE-ID</a> parameter &quot;RANGE&quot; (&quot;THISANDPRIOR&quot; / &quot;THISANDFUTURE&quot;) is NOT supported.<br>
</ul>
<p>FALSE is returned if no selected component exists.</p>
<p class="format">selectComponents([ startYear, startMonth, startDay
                [, endYear,   endMonth,   endDay
                [, cType [, flat [, any [, split]]]]]])
</p>
<p>
Returns an array with components (events.. .).
For all recurrent instances of a <strong>calendar</strong> component, an x-property,
&quot;X-CURRENT-DTSTART&quot; and opt. also &quot;X-CURRENT-DTEND&quot; alt. &quot;X-CURRENT-DUE&quot;,
has been created with a TEXT content, &quot;Y-m-d&nbsp;[H:i:s][timezone/UTC&nbsp;offset]&quot;
showing the current start and opt. also end alt. due date.<br>
Also a &quot;X-RECURRENCE&quot; x-property is set with order number (valid if selectComponents is called from DTSTART date).
</p>
<p class="comment">startYear  : (int) start year  (4*digit),   default current year
startMonth : (int) start month (1-2*digit), default current month
startDay   : (int) start day   (1-2*digit), default current day
endYear    : (int) end year    (4*digit),   default startYear
endMonth   : (int) end month   (1-2*digit), default startMonth
endDay     : (int) end day     (1-2*digit), default startDay
cType      : (mixed) <strong>calendar</strong> component type(-s), (string/array)
                   (&quot;vevent&quot;, &quot;vtodo&quot;, &quot;vjournal&quot;, &quot;vfreebusy&quot;)
             (bool) FALSE (default) =&gt; all
flat       : (bool) TRUE =&gt; output : array[] (ignores split)
               component where recurrence pattern exists within period
             FALSE (default) =&gt; output : array[Year][Month][Day][]
any        : (bool) TRUE (default) =&gt; select components with recurrence within period
                    FALSE =&gt; only components that starts (DTSTART) within period
split      : (bool) TRUE (default) =&gt; one component copy for every day it occurs
                                      within the period
                    FALSE =&gt; one occurrence of component in output array,
                             start date/recurrence (start) date

valid         flat    any     split
combinations                          (defaults in upper case)
           1  FALSE   TRUE    TRUE
           2  FALSE   TRUE    false
           3  FALSE   false   [false] (split set to false if flat=FALSE and any=false)
           4  true    TRUE    [false] (split set to false if flat=true)
           5  true    false   [false] (split set to false if flat=true)
</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;,
                 &quot;directory&quot; =&gt; &quot;import&quot;,
                 &quot;filename&quot;  =&gt; &quot;file.ics&quot; );
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
$vcalendar->sort();
$events_arr = $vcalendar->selectComponents( 2007,11,1,2007,11,30,&quot;vevent&quot;);
 // <span class="comment">select all events occurring 1-30 nov. 2007</span>
foreach( $events_arr as $year =&gt; $year_arr ) {
  foreach( $year_arr as $month =&gt; $month_arr ) {
    foreach( $month_arr as $day =&gt; $day_arr ) {
      foreach( $day_arr as $event ) {
        $currddate   = $event->getProperty( &quot;x-current-dtstart&quot; );
        <span class="comment">// if member of a recurrence set, returns
       // array(&quot; x-current-dtstart&quot;,
       // &lt;(string) date(&quot;Y-m-d&nbsp;[H:i:s][timezone/UTC&nbsp;offset]&quot;)&gt;)</span>
        $startDate   = $event->getProperty( &quot;dtstart&quot; );
        $summary     = $event->getProperty( &quot;summary&quot; );
        $description = $event->getProperty( &quot;description&quot; );
        .. .
</p>
<a name="selectComponents2"></a>
<p class="label">format 2</p>
<p>
Using this format, the function selects components based on specific property value(-s),
<a href="#ATTENDEE">ATTENDEE</a>, <a href="#CATEGORIES">CATEGORIES</a>, <a href="#LOCATION">LOCATION</a>, <a href="#ORGANIZER">ORGANIZER</a>, <a href="#PRIORITY">PRIORITY</a>, <a href="#RESOURCES">RESOURCES</a>, <a href="#STATUS">STATUS</a>, <a href="#SUMMARY">SUMMARY</a> or <a href="#UID">UID</a>.
For the property &quot;SUMMARY&quot; ,if a search value (any case) exists within property value, a hit is found.
For the other properties an exact (strict case) match is required.<br>
<a href="#ATTENDEE">ATTENDEE</a> and <a href="#ORGANIZER">ORGANIZER</a> search values must be prefixed by protocol ex. &quot;MAILTO:hide@address.com&quot;.
Multiple search properties may coexist.
</p>
<p>To retrieve property values, see <a href="#getProperty2">getProperty</a> (Format 2) on <strong>calendar</strong> level.</p>
<p class="format">selectComponents( searchArray )</p>
<p>Outputs an array of matched (unique) components in <a href="#UID">UID</a> order.</p>
<p class="comment">searchArray   : (array) *( propertyName =&gt; propertyValue )
propertyName  : (string) above (any case)
propertyValue : (string) value / (array) ( *[ (string) propertyValue] )
</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;,
                 &quot;directory&quot; =&gt; &quot;import&quot;,
                 &quot;filename&quot;  =&gt; &quot;file.ics&quot; );
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
$vcalendar->sort();
$searchArray = array( &quot;PRIORITY&quot; =&gt; array( 1, 2, 3, 4 ));
$highPrioArr = $vcalendar->selectComponents( $searchArray );
 // <span class="comment">select all components with PRIORITY set to high (1-4)</span>
if( !empty( $highPrioArr )) {
  $highPrioCal = new vcalendar( array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot; ));
  $highPrioCal-&gt;setProperty( "X-WR-CALDESC", "High priority events" );
  foreach( $highPrioArr as $highPrioComponent )
    $highPrioCal-&gt;setComponent( $highPrioComponent );
  $highPrioCal-&gt;returnCalendar();
}
.. .
</p>
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<a name="setComponent"></a><h4>3.1.3.5 setComponent</h4>
<p>
Replace or update component in <strong>calendar</strong>.
Also add <strong>calendar</strong> component to <strong>calendar</strong> when <strong>calendar</strong> component is created with the procedural (<b>non</b>-factory) method,
see example <a href="#vevent">VEVENT</a>, format 2.
</p>
<p>A successful update returns TRUE.</p>
<p class="label">format 1</p>
<p>Insert last in component chain.</p>
<p class="format">setComponent( component )
addComponent( component ) // <span class="ref">alias</span></p>
<p class="comment">component = (object) iCalcreator component instance</p>
<p class="comment">addComponent, may be removed i future versions.</p>
<p class="label">format 2</p>
<p>
Insert/replace component with order number (1st=1, 2nd=2.. .).
If replace and orderNumber is not found, component is inserted last in chain.
</p>
<p class="format">setComponent( component, orderNumber )</p>
<p class="comment">component = (object) iCalcreator component instance
int       = (int) order numder</p>
<p class="label">format 3</p>
<p>
Replace component with component type and 1st alt. component order number.
If orderNumber is not found, component is inserted last in chain.
</p>
<p class="format">setComponent( component, componentType [, componentSuborderNo])</p>
<p class="comment">component           = (object) iCalcreator component instance
componentType       = (string) component type
componentSuborderNo = (int) component Suborder Number</p>
<p class="label">format 4</p>
<p>
Replace component with <a href="#UID">UID</a>.
N.B <a href="#UID">UID</a> is NOT set for <a href="#VALARM">ALARM</a> / <a href="#VTIMEZONE">TIMEZONE</a> components.
If <a href="#UID">UID</a> is not found, component is inserted last in chain.
</p>
<p class="format">setComponent( component, <a href="#UID">UID</a> )</p>
<p class="comment">component = (object) iCalcreator component instance</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;, &quot;filename&quot; =&gt; &quot;file.ics&quot;);
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
$vevent = vcalendar->getComponent( 1 );&nbsp;//<span class="comment">fetch first EVENT</span>
$vevent->setProperty( &quot;dtstart&quot;&nbsp;//<span class="comment">update <a class="ref" href="#DTSTART">DTSTART</a> property</span>
                    , 2006, 12, 24, 19, 30, 00 );
.. .
$vcalendar->setComponent( $vevent, 1 ); // replace first component
.. .
</p>
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<a name="Calendar_inputoutput_functions"></a><h3>3.1.4 Calendar input/output functions</h3>

<a name="parse_merge"></a><h4>3.1.4.1 parse and merge</h4>
<p>
Parse iCal file(-s) or string/array <strong>calendar</strong> content into a single vcalendar object (components, properties and parameters),
including multiple vcalendars (within a single ICS file) parse, e.g. Oracle Calendar exports.
</p>
<p>
As long as php.ini directive &quot;allow_url_fopen&quot; is enabled, remote files, URLs; protocol &quot;http&quot; (&quot;webcal&quot;), are supported. A remote file, URL, <b>must</b> be prefixed by &quot;http://&quot; (&quot;webcal://&quot;) and suffixed by a valid filename.! Recommendation is to download (cache) remote file before parsing, due to execution time and control.
</p>
<p>
If missing, component property <a href="#UID">UID</a> is created when parsing. For that reason <a href="#Unique_id">UNIQUE_ID</a> might need to be set before parsing, Se examples below.
</p>
<p>
Notice <a href="#date_restriction">date restriction</a>!
</p>
<p>
If parse error  occurs (like file access error, invalid <strong>calendar</strong> file or <strong>calendar</strong> file without components), FALSE is returned.
</p>
<p class="label">Format</p>
<p class="format">parse( [ textToParse ] )</p>
<p class="comment">textToParse = (string) calendarContent
                       ex. result from - file_get_contents( &quot;filename&quot;)
              (array)  calendarContent
                       ex. result from - file( &quot;filename&quot;, FILE_IGNORE_NEW_LINES )</p>
<p class="label">parse example 1</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;, &quot;filename&quot; =&gt; &quot;file.ics&quot;);
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
.. .
</p>
<p class="label">parse example 2</p>
<p class="example">
$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;,
                 &quot;url&quot; =&gt; &quot;http://www.ical.net/calendars/calendar.ics&quot; );
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
.. .
</p>
<p class="label">parse example 3</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;,
                 &quot;url&quot; =&gt; &quot;http://www.ical.net/calendars/calendar.ics&quot; );
$vcalendar = new vcalendar( $config );
...
$str = array(
&quot;BEGIN:VCALENDAR&quot;,
&quot;PRODID:-//kigkonsult.se//NONSGML kigkonsult.se iCalcreator 2.12//&quot;,
&quot;VERSION:2.0&quot;,
&quot;BEGIN:VEVENT&quot;,
&quot;DTSTART:20101224T190000Z&quot;,
&quot;DTEND:20101224T200000Z&quot;,
&quot;DTSTAMP:20101020T103827Z&quot;,
&quot;UID:20101020T113827-hide@address.com&quot;,
&quot;DESCRIPTION:example&quot;,
&quot;END:VEVENT&quot;,
&quot;END:VCALENDAR&quot;);
$vcalendar->parse( $str );
...
</p>
<p class="label">merge example</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;,
                 &quot;directory&quot; =&gt; &quot;import&quot; );
$vcalendar = new vcalendar( $config );

$vcalendar->setConfig( &quot;filename&quot;,&nbsp;&nbsp;&quot;file1.ics&quot; );
$vcalendar->parse();

$vcalendar->setConfig( &quot;filename&quot;,&nbsp;&nbsp;&quot;file2.ics&quot; );
$vcalendar->parse();

$vcalendar->sort();
$vcalendar->setConfig( &quot;directory&quot;,&nbsp;&quot;export&quot; );
$vcalendar->setConfig( &quot;filename&quot;,&nbsp;&nbsp;&quot;icalmerge.ics&quot; );
$vcalendar->saveCalendar();
.. .
</p>
<br>
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<a name="createCalendar"></a><h4>3.1.4.2 createCalendar</h4>
Generate and return <strong>calendar</strong> in a string, testing.. .?
<p class="label">Format</p>
<p class="format">createCalendar()</p>
<p class="label">Example</p>
<p class="example">.. .
$str = $vcalendar->createCalendar();
echo $str;
</p>
<br>
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<a name="returnCalendar"></a><h4>3.1.4.3 returnCalendar</h4>
<p>
Redirect <strong>calendar</strong> content to user browser. Filename, addressed to browser, is automatically generated if missing or not set;<br>
<span class="format">$filename = date( &quot;YmdHis&quot; ).&quot;.ics&quot; </span>.
</p>
<p class="label">Format</p>
<p class="format">returnCalendar( [ utf8Encode [, gzip ]] )</p>
<p class="comment">utf8Encode = (bool) TRUE:  utf8 encoded output, FALSE: (default) no encoding
gzip       = (bool) TRUE:  gzip compressed output
                           Header &quot;Content-Length&quot; only sent when gzip=TRUE
                    FALSE: (default) no compressing</p>
<p class="label">Example 1</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
.. .
$vevent = &amp; $vcalendar->newComponent( &quot;vevent&quot; );
$vevent->setProperty( &quot;dtstart&quot;, array( &quot;year&quot;  =&gt; 2007
                                      , &quot;month&quot; =&gt; 4
                                      , &quot;day&quot;   =&gt; 1
                                      , &quot;hour&quot;  =&gt; 19 ));
$vevent->setProperty( &quot;duration&quot;, 0, 0, 3 ));
$vevent->setProperty( &quot;LOCATION&quot;, &quot;Central Plaza&quot; );
$vevent->setProperty( &quot;summary&quot;, &quot;PHP summit&quot; );
.. .
$vcalendar->returnCalendar();
</p>
<p class="label">Example 2</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;,
                 &quot;directory&quot; =&gt; &quot;import&quot;,
                 &quot;filename&quot;  =&gt; &quot;file.ics&quot; );
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
$utf8Encode = TRUE;
$hacPar = &quot;HTTP_ACCEPT_ENCODING&quot;;
if( isset( $_SERVER[$hacPar] ) &amp;&amp;
  ( FALSE !== strpos( strtolower( $_SERVER[$hacPar] ), &quot;gzip&quot; )))
  $gzip = TRUE;
else
  $gzip = FALSE;
$vcalendar->returnCalendar( $utf8Encode, $gzip );
</p>
<br>
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<a name="saveCalendar"></a><h4>3.1.4.4 saveCalendar</h4>
<p>
Save ical <strong>calendar</strong> in a file, uses present directory if directory not set, filename is automatically generated if missing or not set;<br>
<span class="format">$filename = date( &quot;YmdHis&quot; ).&quot;.ics&quot; </span>.
</p>
<p>Directory/filename <b>must</b> be writeable, delimiter default <em>PHP</em> constant DIRECTORY_SEPARATOR.</p>
<p>If file error occurs, FALSE is returned.</p>
<p class="label">Format</p>
<p class="format">saveCalendar ( [ directory [, filename [, delimiter ]]] )</p>
<p class="comment">directory = (string) directory, default FALSE
filename  = (string  file name, default FALSE
delimiter = (string) path directory/filename separator, default FALSE</p>
Parameters for <span class="format">directory/filename/delimiter</span>, kept for backward compatibility,
may be removed i future versions. Recommendation is to use <span class="format">setConfig</span>, Se
example below.
<p class="label">Example</p>
<p class="example">.. .
$vcalendar->setConfig( array( &quot;directory&quot; =&gt; &quot;depot&quot;,
                              &quot;filename&quot;  =&gt; &quot;calendar.ics&quot; ));
$result = $vcalendar->saveCalendar();
if( !$result )
&nbsp;&nbsp;echo &quot;error when saving.. .&quot;
</p>
<br>
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<a name="sort"></a><h4>3.1.4.5 sort</h4>
<p class="label">Format 1</p>
<p>
Sort created/parsed <strong>calendar</strong> components on the following (prioritized) keys:<br>
1 - X-CURRENT-DTSTART - X-CURRENT-DTEND/X-CURRENT-DUE<br>
&nbsp;&nbsp;&nbsp;&nbsp;(if created in function <a href="#selectComponents">selectComponents</a>)<br>
1 - <a href="#DTSTART">DTSTART</a> - <a href="#DTEND">DTEND</a> alt. <a href="#DURATION">DURATION</a> (<a href="#VEVENT">VEVENT</a> and <a href="#VFREEBUSY">VFREEBUSY</a> components)<br>
1 - <a href="#DTSTART">DTSTART</a> - <a href="#DUE">DUE</a> alt. <a href="#DURATION">DURATION</a> (<a href="#VTODO">VTODO</a> components)<br>
1 - <a href="#DTSTART">DTSTART</a> (<a href="#VJOURNAL">VJOURNAL</a> components)<br>
2 - <a href="#CREATED">CREATED</a> / <a href="#DTSTAMP">DTSTAMP</a><br>
3 - <a href="#UID">UID</a><br>
<a href="#VTIMEZONE">VTIMEZONE</a> component is always placed first in chain, including 
<a href="#VTIMEZONE">STANDARD</a>&nbsp;/&nbsp;<a href="#VTIMEZONE">DAYLIGHT</a>&nbsp; sub-components are sorted (on asc. key <a href="#DTSTART">DTSTART</a>) when calling 
<a href="#createCalendar">createCalendar</a> (or <a href="#returnCalender">returnCalender</a>).
<a href="#VALARM">ALARM</a> sub-components, if exists, are not sorted. 

</p>
<p class="format">sort()</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;,
                 &quot;directory&quot; =&gt; &quot;import&quot;,
                 &quot;filename&quot;  =&gt; &quot;file.ics&quot; );
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
$vcalendar->sort();
$vcalendar->returnCalendar();
</p>

<p class="label">Format 2</p>
<p>Sort created/parsed <strong>calendar</strong> components on specific property values and ascending order.</p>
<p class="format">sort( sortArgument )</p>
<p class="comment">sortArgument: (string) &quot;<a href="#ATTENDEE">ATTENDEE</a>&quot; / &quot;<a href="#CATEGORIES">CATEGORIES</a>&quot; / &quot;<a href="#DTSTAMP">DTSTAMP</a>&quot; / 
                       &quot;<a href="#LOCATION">LOCATION"</a>&quot; / &quot;<a href="#ORGANIZER">ORGANIZER</a>&quot; / &quot;<a href="#RESOURCES">RESOURCES</a>&quot; / 
                       &quot;<a href="#PRIORITY">PRIORITY</a>&quot; / &quot;<a href="#STATUS">STATUS</a>&quot; / &quot;<a href="#SUMMARY">SUMMARY</a>&quot;.
                       For a property where multiple occurrence may exist
                       (<a href="#ATTENDEE">ATTENDEE</a>, <a href="#CATEGORIES">CATEGORIES</a>, <a href="#RESOURCES">RESOURCES</a>) 
                       lowest (alphabetic) value is used as sort parameter.</p>
<br>
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<a name="useCachedCalendar"></a><h4>3.1.4.6 useCachedCalendar</h4>
<p>
If recent version of local (non-empty and saved) <strong>calendar</strong> file exists, an HTTP redirect header is sent otherwise FALSE is returned.
</p>
<p class="label">Format</p>
<p class="format">useCachedCalendar( [ timeout ] )</p>
<p class="format">useCachedCalendar( [ directory [, filename [, delimiter [, timeout ]]]] )</p>
<p class="comment">directory = (string) directory, default FALSE
filename  = (string  file name, default FALSE
delimiter = (string) path directory/filename separator, default FALSE
timeout   = (int) default 3600 sec
Second format with parameters for <span class="format">directory/filename/delimiter</span>,<br>kept for backward compatibility, may be removed i future<br>versions. Recommendation is to use <span class="format">setConfig</span>, Se example below.</p>
<p class="label">Example</p>
<p class="example">.. .
$vcalendar->setConfig( &quot;directory&quot;, &quot;depot&quot; );
$vcalendar->setConfig( &quot;filename&quot;, &quot;calendar.ics&quot; );
$vcalendar->useCachedCalendar();
</p>
<br>
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<a name="Calendar_configuration_functions"></a><h3>3.1.5 Calendar configuration functions</h3>

<a name="configKeys"></a><h4>3.1.5.1 configuration keys</h4>
<p>All configuration keys (allowEmpty, compsInfo etc.) case independent.</p>
<table>
<tr>
<td class="bl bb">key</td>
<td class="bl bb"><strong>calendar</strong></td>
<td class="bl bb">component</td>
<td class="bl bb">remark</td>
</tr>
<tr>
<td class="bl bb"><a class="ref" href="#allowEmpty">allowEmpty</a></td>
<td class="bl bb center">*</td>
<td class="bl bb center">*</td>
<td class="bl bb ref">&nbsp;</td>
</tr>
<tr>
<td class="bl bb"><a class="ref" href="#Compsinfo">Compsinfo</a></td>
<td class="bl bb center">*</td>
<td class="bl bb center">*</td>
<td class="bl bb ref">getConfig only</td>
</tr>
<tr>
<td class="bl bb"><a class="ref" href="#Delimiter">Delimiter</a></td>
<td class="bl bb center">*</td>
<td class="bl bb">&nbsp;</td>
<td class="bl bb ref">&nbsp;</td>
</tr>
<tr>
<td class="bl bb"><a class="ref" href="#Directory">Directory</a></td>
<td class="bl bb center">*</td>
<td class="bl bb">&nbsp;</td>
<td class="bl bb ref">&nbsp;</td>
</tr>
<tr>
<td class="bl bb"><a class="ref" href="#Filename">Filename</a></td>
<td class="bl bb center">*</td>
<td class="bl bb">&nbsp;</td>
<td class="bl bb ref">&nbsp;</td>
</tr>
<tr>
<td class="bl bb"><a class="ref" href="#Dirfile">Dirfile</a></td>
<td class="bl bb center">*</td>
<td class="bl bb">&nbsp;</td>
<td class="bl bb ref">getConfig only</td>
</tr>
<tr>
<td class="bl bb"><a class="ref" href="#Filesize">Filesize</a></td>
<td class="bl bb center">*</td>
<td class="bl bb">&nbsp;</td>
<td class="bl bb ref">getConfig only</td>
</tr>
<tr>
<td class="bl bb"><a class="ref" href="#Format">Format</a></td>
<td class="bl bb center">*</td>
<td class="bl bb">&nbsp;</td>
<td class="bl bb ref">&nbsp;</td>
</tr>
<tr>
<td class="bl bb"><a class="ref" href="#Language">Language</a></td>
<td class="bl bb center">*</td>
<td class="bl bb center">*</td>
<td class="bl bb ref">&nbsp;</td>
</tr>
<tr>
<td class="bl bb"><a class="ref" href="#NewlineChar">NewlineChar</a></td>
<td class="bl bb center">*</td>
<td class="bl bb center">*</td>
<td class="bl bb ref">&nbsp;</td>
</tr>
<tr>
<td class="bl bb"><a class="ref" href="#dTZID">TZID</a></td>
<td class="bl bb center">*</td>
<td class="bl bb center">*</td>
<td class="bl bb ref">&nbsp;</td>
</tr>
<tr>
<td class="bl bb"><a class="ref" href="#Unique_id">Unique_id</a></td>
<td class="bl bb center">*</td>
<td class="bl bb center">*</td>
<td class="bl bb ref">&nbsp;</td>
</tr>
<tr>
<td class="bl bb"><a class="ref" href="#configURL">URL</a></td>
<td class="bl bb center">*</td>
<td class="bl bb">&nbsp;</td>
<td class="bl bb ref">&nbsp;</td>
</tr>
</table>
<br>
<br>
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<a name="getConfig"></a><h4>3.1.5.2 getConfig</h4>
<p class="format">getConfig( [ key ] )</p>
<p class="comment">key = (string) config key</p>
<p class="label">Example 1</p>
<p class="example">.. .
$filename = $vcalendar->getConfig( &quot;filename&quot; );
.. .</p>
In this example, notice <a href="#Filename">Filename</a>
<br>
<p class="label">Example 2</p>
<p class="example">.. .
$config = $vcalendar->getConfig();
.. .</p>
<p class="comment">Output= array( string key =&gt; mixed value
           *[, string key =&gt; mixed value] )</p>
<br>
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<a name="initConfig"></a><h4>3.1.5.3 calendar/component initialization</h4>
<p class="label">Format</p>
<p>When creating a new <strong>calendar</strong>.</p>
<p class="format">vcalendar( [ config ] )</p>
<p class="comment">config = (array) ( key =&gt; value *[, key =&gt; value] )
key    = (string) config key
value  = (mixed) config value</p>
<p class="label">Example 1</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;,
                 &quot;directory&quot; =&gt; &quot;import&quot;,
                 &quot;filename&quot;  =&gt; &quot;file.ics&quot; );
$vcalendar = new vcalendar( $config );
.. .
</p>
<p>When creating a new <strong>calendar</strong> component.</p>
<p class="format">component( [ config ] )</p>
<p class="comment">config = (array) ( key =&gt; value *[, key =&gt; value] )
key    = (string) config key
value  = (mixed) config value</p>
<p class="label">Example 2</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot; );
$vevent = new vevent( $config );
.. .
</p>
<p class="label">Example 3</p>
<p class="example">. ..
$config = $vcalendar->getConfig();
$vevent = new vevent( $config );
.. .
</p>
<p>Only component relevant configuration are set. If using the <a href="#newComponent">newComponent</a> function, configuration is set automatically.</p>
<br>
<br>
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<a name="setConfig"></a><h4>3.1.5.4 setConfig</h4>
<p>A successful &quot;setConfig&quot; returns TRUE.</p>
<p class="label">Format 1</p>
<p class="format">setConfig( [ config ] )</p>
<p class="comment">config = (array) ( key =&gt; value *[, key =&gt; value] )
key    = (string) config key
value  = (mixed) config value</p>
<p class="label">Example 1</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;,
                 &quot;directory&quot; =&gt; &quot;import&quot;,
                 &quot;filename&quot;  =&gt; &quot;file.ics&quot; );
$vcalendar = new vcalendar();
$vcalendar->setConfig( $config );
.. .
</p>
<p class="label">Example 2</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot; );
$vevent = new vevent();
$vevent->setConfig( $config );
.. .
</p>
<p class="label">Format 2</p>
<p class="format">setConfig( key, value )</p>
<p class="comment">key    = (string) config key
value  = (mixed) config value</p>
<p class="label">Example 1</p>
<p class="example">$vcalendar = new vcalendar();
$vcalendar->setConfig( &quot;directory&quot;, &quot;depot&quot; );
.. .
</p>
<p class="label">Example 2</p>
<p class="example">$vevent = new vevent();
$vevent->setConfig( &quot;unique_id&quot;, &quot;kigkonsult.se&quot; );
.. .
</p>
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<a name="allowEmpty"></a><h4>3.1.5.5 Allow empty components</h4>
<p>
Allow or reject empty <strong>calendar</strong> properties, default allow (TRUE). Used in <a href="#createCalendar">createCalendar</a>, <a href="#returnCalender">returnCalender</a> or
create&lt;Property&gt; methods, creating rfc2445 formats.
</p>

<br>
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<a name="Compsinfo"></a><h4>3.1.5.6 Component information</h4>
<p>Only to use with function getConfig.</p>
<p>
Get information about <strong>calendar</strong> components. Returns array with basic information
about all components (in array format) within <strong>calendar</strong>.
</p>
<p class="comment">Output   = array ( *compinfo )
compinfo = array ( &quot;ordno&quot; =&gt; int ordno,
                   // <span class="ref">order number (1st=1, 2nd=2..)</span>
                 , &quot;type&quot;  =&gt; string type
                   // <span class="ref">component type (vevent, vtodo.. .</span>
                 , &quot;uid&quot;   =&gt; string uid
                   // <span class="ref">component <a href="#UID">UID</a> (not for <a href="#VALARM">ALARM</a> / <a href="#VTIMEZONE">TIMEZONE</a>)</span>
                 , &quot;props&quot; =&gt;
                     array( *[ propertyName =&gt; Property count ])
                   // <span class="ref">for every set property</span>
                 , &quot;sub&quot;   =&gt; array( *compinfo ))
                   // <span class="ref">if subcomponents exists, an array for each subcomponent</span></p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;,
                 &quot;directory&quot; =&gt; &quot;import&quot;,
                 &quot;filename&quot;  =&gt; &quot;file.ics&quot; );
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
$compsinfo = $vcalendar->getConfig( &quot;compsinfo&quot; );
foreach( $compsinfo as compinfo) {
&nbsp;echo &quot; order number : &quot;.$compinfo[&quot;ordno&quot;].&quot;&lt;br&nbsp;/&gt;&quot;;
&nbsp;echo &quot; type : &quot;.$compinfo[&quot;type&quot;].&quot;&lt;br&nbsp;/&gt;&quot;;
&nbsp;echo &quot; UID : &quot;.$compinfo[&quot;uid&quot;].&quot;&lt;br&nbsp;/&gt;&quot;;
&nbsp;foreach( $compinfo[&quot;props&quot;] as $propertyName =&gt; $propertyCount )
&nbsp;&nbsp;echo &quot;  $propertyName = $propertyCount&quot;;
&nbsp;if( is_array( $compinfo[&quot;sub&quot;] )) {
&nbsp;&nbsp;foreach( $compinfo[&quot;sub&quot;] as $subcompinfo ) {
&nbsp;&nbsp;&nbsp;echo &quot; order number : &quot;.$subcompinfo[&quot;ordno&quot;].&quot;&lt;br&nbsp;/&gt;&quot;;
&nbsp;&nbsp;&nbsp;/* .. dito if subcomponents exists .. . */
&nbsp;&nbsp;}
&nbsp;}
}
</p>
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<a name="Delimiter"></a><h4>3.1.5.7 Delimiter</h4>
<p>Directory/filename delimiter.</p>
<p>Default <em>PHP</em> constant DIRECTORY_SEPARATOR. If used, <b>must</b> be set BEFORE filename!</p>
<br>
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<a name="Directory"></a><h4>3.1.5.8 Directory</h4>
<p>Local directory to store/read iCal files, default &nbsp;&quot;<b>.</b>&quot;.</p>
<p>
Directory <b>must</b> be set BEFORE <a href="#Filename">filename</a> and <b>must</b> exist and be writeable otherwise FALSE is returned.
If set using an config array and together with <a name="Filename"><u>Filename</u></a>, Directory are set automatically first.
When setting Directory any previously set <a href="#configURL">URL</a> is removed.
</p>
<br>
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<a name="Fileinfo"></a><h4>3.1.5.9 Fileinfo</h4>
<p>
Only available in function getConfig, giving information in array format about <a href="#Directory">directory</a>, 
<a href="#Filename">filename</a> and <a href="#Filesize">filesize</a>.
</p>
<p class="label">Example</p>
<p class="example">$fileinfo = $vcalendar->getConfig( &quot;fileinfo&quot; );</p>
<p class="comment">output = array( &lt;directory&gt;, &lt;filename&gt;, &lt;filesize&gt; )</p>
<br>
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<a name="Filename"></a><h4>3.1.5.10 Filename</h4>
<p>iCal local file name, default created like (if not set):</p>
<p class="format">$filename = date( &quot;YmdHis&quot; ).&quot;.ics&quot;;</p>
<p class="format">$filename = date( &quot;YmdHis&quot; ).&quot;.xml&quot;; <span class="comment"> // if <a href="#Format">format</a> set to &quot;xcal&quot;</span></p>
<p>
If not set, filename is created when requested, ex. in functions <a href="#saveCalendar">saveCalendar</a> or getConfig(&quot;filename&quot;).
</p>
<p>
Local filename <b>must</b> be set AFTER setting directory (and opt. delimiter)!
Filename (and opt. directory) <b>must</b> be readable/writeable otherwise FALSE is returned.
</p>
<br>
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<a name="Filesize"></a><h4>3.1.5.11 Filesize</h4>
<p>
Only when getting configuration (using function getConfig).<br>
Returns the size of the file in bytes, to be called<br>
- after &quot;saveCalendar()&quot;<br>
or<br>
- after a &quot;setConfig( &quot;directory&quot; / &quot;filename&quot; )&quot; and before/after &quot;parse()&quot;.<br>
Getting the filesize for a remote file (URL) will always return zero.
</p>
<br>
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<a name="Format"></a><h4>3.1.5.12 Format</h4>
<p>Format for <strong>calendar</strong> output, &quot;iCal&quot;/&quot;xCal&quot;, any case.</p>
<p>
&quot;iCal&quot; is default (rfc2445), &quot;xCal&quot; force xml formatted output, according to<br>
&quot;draft-ietf-calsch-many-xcal-01.txt&quot; (now obsolete).
</p>
<p>
For converting to and from XML, according to rfc6321, &quot;xCal: The XML Format for <strong>iCalendar</strong>&quot;, use functions<br>
- <a href="#iCal2XML">iCal2XML</a> converts an iCalcreator instance to XML<br>
- <a href="#XML2iCal">XML2iCal</a> converts XML (string/file) to an icalcreator instance.
</p>
<br>
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<a name="Language"></a><h4>3.1.5.13 Language</h4>
<p>Language for <strong>calendar</strong> and component TEXT value properties as defined in [RFC 1766].</p>
<p>
If NOT set in TEXT property parameters, language from &quot;setConfig( &quot;language&quot;, ..&quot; at component level will be used, if set,
otherwise language from &quot;setConfig( &quot;language&quot;, ..&quot; at <strong>calendar</strong> level will be used, if set.
</p>
<br>
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<a name="NewlineChar"></a><h4>3.1.5.14 NewlineChar</h4>
<p>Character(s) used for carriage return + line feed (CR+LF), default &quot;\r\n&quot;.</p>
<br>
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<a name="dTZID"></a><h4>3.1.5.15 TZID</h4>
<p>
Default (local?) timezone, will be used if no TZID parameter is supplied when setting <a href="#DTSTART">DTSTART</a>, <a href="#DTEND">DTEND</a>, <a href="#DUE">DUE</a> or <a href="#RECURRENCE-ID">RECURRENCE-ID</a> (auto completion).
Note, some <strong>calendar</strong> software also require <a href="#Additional_Descriptors">X-WR-TIMEZONE</a> on calendar level and <a href="#Additional_Descriptors">X-LIC-LOCATION</a> in vtimezone component 
(to be set manually, examine also the <a href="#createTimezone">createTimezone</a> function).
</p>
<br>
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<a name="Unique_id"></a><h4>3.1.5.16 Unique_id</h4>
<p>
&quot;Unique_id&quot; is used in property PRODID at <strong>calendar</strong> level and <a href="#UID">UID</a> at component level, both created automatically, if not set manually.
</p>
<p class="quotes">PRODID
The identifier is RECOMMENDED to be the identical syntax to the
[RFC 822] addr-spec. A good method to assure uniqueness is to put the
domain name or a domain literal IP address of the host on which.. .
</p>
<p>
Default <b>AUTOMATICALLY</b> generated by using <em>PHP</em> function gethostbyname( $_SERVER[&quot;SERVER_NAME&quot;] )
when running in a web server environment or &quot;localhost&quot; when using command line interface.
Used when setting other (domain) name than server name.
</p>
<p>
The property PRODID (at <strong>calendar</strong> level) is always recreated when setting unique_id.
</p>
<p>
If missing, the property <a href="#UID">UID</a> at component level is created at first use of functions <a href="#createCalendar">createCalendar</a>, <a href="#returnCalendar">returnCalendar</a> or <a href="#saveCalendar">saveCalendar</a>
</p>
<p>
A strong recommendation is <b>always</b> to set unique_id when creating a new vcalendar or component object,
to ensure accurate creation of all components <a href="#UID">UID</a> property, also before <a href="#parse">parse</a>, in case of missing <a href="#UID">UID</a>.
</p>
<br>

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<a name="configURL"></a><h4>3.1.5.17 URL</h4>
<p>
When reading remote files with URL (using the <a href="#parse">parse()</a> method),
only protocol &quot;http&quot; (&quot;webcal&quot;) is supported,
i.e. URL <b>must</b> be prefixed by &quot;http://&quot; (&quot;webcal://&quot;) and suffixed by a valid filename.
</p>
<p>
When setting URL, any previously set Directory is removed.<br>
The URL filename part can be retrieved by - getConfig( &quot;filename&quot; ).
</p>
<p>
When storing a remote iCal file locally, only directory need to be set,
filename remains unchanged (i.e. 1. set URL, 2. parse, 3. set directory, 4. saveCalendar).
</p>
<p class="label">Example</p>
<p>Parse of rempte file, then local save in &quot;depot&quot; folder, using original filename</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;,
                 &quot;url&quot;, &quot;http://www.iCal.net/depot/calendar.ics&quot; );
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
$vcalendar->sort();
.. .
.. .
$vcalendar->setConfig( &quot;directory&quot;, &quot;depot&quot; );
$vcalendar->saveCalendar();</p>
<br>
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<a name="Calendar_component_object_property_function_list"></a><h2>3.2 Calendar component object property function list</h2>
<p>
All <strong>calendar</strong> component property functions for get/set data.<br>
For property format in detail, see
<a href="http://kigkonsult.se/downloads/dl.php?f=rfc2445" title="RFC2445" target="_blank">RFC2445</a> - Internet Calendaring and Scheduling Core Object Specification (iCalendar).
</p>
<a name="DATE_WITH_UTC_TIME"></a>
<span class="label">Notice:</span> for properties and DATE-TIME with <b>UTC</b> time.
<p class="quotes">RFC2445:
The date with UTC time, or absolute time, is identified by a LATIN
CAPITAL LETTER Z suffix character (US-ASCII decimal 90), the UTC
designator, appended to the time value. For example, the following
represents January 19, 1998, at 0700 UTC:
</p>
<p class="quotes">DTSTART:19980119T070000Z</p>
<p class="quotes">The <a href="#TZID">TZID</a> property parameter MUST <b>NOT</b> be applied to DATE-TIME
properties whose time values are specified in UTC.
</p>
<p>
<a name="date_restriction"></a>
<span class="label">Notice:</span> date limitation.<br>
Due to a limitation in <em>PHP</em> date functions, e.g. <span class="format">mktime</span>,
<span class="format">strtotime</span>, a date (e.g. while setting <a href="#DTSTART">DTSTART</a> property)
before &quot;January 1 1970 00:00:00 GMT&quot; may force a <em>PHP</em> date function to generate an error or set date to &quot;January 1 1970&quot;.
</p>
<a name="deleteProperty_PROP"></a><h3>3.2.1 deleteProperty</h3>
Generic <strong>calendar</strong> delete property function,simplifying removal of <strong>calendar</strong> properties.<br>
FALSE is returned if no property exists or when end-of-properties at consecutive function calls.
<p class="label">Format</p>
<p class="format">deleteProperty( [ PropName [, order ] )</p>
<p class="comment">propName = (string) case independent, rfc2445 component property names,
                    unknown/missing propName will be used as <a href="#X-PROPERTY_PROP">X-property</a>.
order    = (int)    if missing 1st/next occurrence,
                    used with multiply (property) occurrences</p>
<p class="label">Example</p>
<p>Remove all COMMENT properties.</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;,
                 &quot;directory&quot; =&gt; &quot;import&quot;,
                 &quot;filename&quot;  =&gt; &quot;file.ics&quot; );
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
$e = $vcalendar->getComponent( &quot;vevent&quot; );
while( $e->deleteProperty( &quot;comment&quot; ))
&nbsp;&nbsp;continue;
.. .</p>
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<a name="getProperty_PROP"></a><h3>3.2.2 getProperty</h3>
<p>Generic get property function, simplifying fetch of <strong>calendar</strong> properties.</p>
<p>FALSE is returned if no property exists or when end-of-properties at consecutive function calls.</p>
<p class="label">Format</p>
<p class="format">getProperty( PropName [, order [, complete ]] )</p>
<p class="comment">propName = (string) case independent, rfc2445 component property names,
                    unknown/missing propName will be used as <a href="#X-PROPERTY_PROP">X-property</a>.
order    = (int)    if missing/FALSE 1st/next occurrence,
                    otherwise with multiply occurrences (1st=1, 2nd=2.. .)
complete - (bool)   FALSE (default): output only property value
                    TRUE           : output =
                             array(&quot;value&quot; =&gt; &lt;value&gt;
                                  ,&quot;params&quot;=&gt; &lt;parameter array&gt;)</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;,
                 &quot;directory&quot; =&gt; &quot;import&quot;,
                 &quot;filename&quot;  =&gt; &quot;file.ics&quot; );
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
while( $vevent = $vcalendar->getComponent( &quot;vevent&quot; )) {
&nbsp;$dtstart = $vevent->getProperty( &quot;dtstart&quot; ); // <span class="ref">one occurrence</span>
&nbsp;$description = $vevent->getProperty( &quot;description&quot; ); // <span class="ref">one occurrence</span>
&nbsp;while( $comment = $vevent->getProperty( &quot;comment&quot; )) {
    // <span class="ref">MAY occur more than once</span>
&nbsp;.. .
&nbsp;}
.. .
</p>
<br>
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<a name="parse"></a><h3>3.2.3 parse</h3>
<p>Parse strict rfc2445 component property text and/or ALARMs.</p>
<p>A rfc2445 strict formatted property text, in string or array format and starting with property name.</p>
<p>
Complete <a href="#VALARM">ALARM</a>s, all properties included, in array format and
first array row as &quot;BEGIN:VALARM&quot;, last as &quot;END:VALARM&quot;
as well as <a href="#VTIMEZONE">TIMEZONE</a> and standard/daylight subcomponents.
</p>
<p>FALSE is returned if (read-file) problems occur.</p>
<p class="label">Format</p>
<p class="format">parse( propertyText )</p>
<p class="comment">propertyText = (string) rcf2445 formatted property,
               (array)  rcf2445 formatted properties,
               property name <b>must</b> start string / rows(-s)</p>
<p class="label">example</p>
<p class="example">.. .
$vevent = &amp; $vcalendar->newComponent( &quot;vevent&quot; );
$e->parse( &quot;DTSTAMP:19970324T1200Z&quot; );
$e->parse( &quot;SEQUENCE:0&quot; );
$e->parse( &quot;ORGANIZER:MAILTO:hide@address.com&quot; );
$e->parse( array(
&quot;ATTENDEE;RSVP=TRUE:MAILTO:hide@address.com&quot;,
&quot;ATTENDEE;RSVP=TRUE:MAILTO:hide@address.com&quot;,
&quot;ATTENDEE;RSVP=TRUE:MAILTO:hide@address.com&quot;,
&quot;ATTENDEE;RSVP=TRUE:MAILTO:hide@address.com&quot; ));
$e->parse( &quot;DTSTART:19970324T123000Z&quot; );
$e->parse( &quot;DTEND:19970324T210000Z&quot; );
$e->parse( &quot;CATEGORIES:MEETING,PROJECT&quot; );
$e->parse( &quot;CLASS:PUBLIC&quot; );
$e->parse( &quot;SUMMARY:Calendaring Interoperability Planning Meeting&quot; );
$e->parse( &quot;STATUS:DRAFT&quot; );
$e->parse( array(
 &quot;DESCRIPTION:Project xyz Review Meeting Minutes&quot;
,&quot;Agenda&quot;
,&quot;1. Review of project version 1.0 requirements.&quot;
,&quot;2. Definition of project processes.&quot;
,&quot;3. Review of project schedule.&quot;
,&quot;Participants: John Smith, Jane Doe, Jim Dandy&quot;
,&quot;- It was decided that the requirements need to be signed off by &quot;.
 &quot;product marketing.&quot;
,&quot;- Project processes were accepted.&quot;
,&quot;- Project schedule needs to account for scheduled holidays and employee&quot;.
 &quot; vacation time. Check with HR for specific dates.&quot;
,&quot;- New schedule will be distributed by Friday.&quot;
,&quot;- Next weeks meeting is cancelled. No meeting until 3/23.&quot; ));
$e->parse( &quot;LOCATION:LDB Lobby&quot; );
$e->parse(
&quot;ATTACH;FMTTYPE=application/postscript:ftp://xyz.com/pub/conf/bkgrnd.ps&quot; );
$e->parse( array(
&quot;BEGIN:VALARM&quot;,
&quot;ACTION:AUDIO&quot;,
&quot;TRIGGER;VALUE=DATE-TIME:19970224T070000Z&quot;,
&quot;ATTACH;FMTTYPE=audio/basic:http://host.com/pub/audio-files/ssbanner.aud&quot;,
&quot;REPEAT:4&quot;,
&quot;DURATION:PT1H&quot;,
&quot;X-alarm:non-standard ALARM property&quot;,
&quot;END:VALARM&quot; ));
$e->parse(
&quot;X-xomment:non-standard property will be displayed, comma escaped&quot;);
.. .
</p>
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<a name="setProperty_PROP"></a><h3>3.2.4 setProperty</h3>
<p>
Generic set property function, simplifying insert of component properties. For properties where
multiple occurrences are allowed, last parameter is an index, implementing replaceProperty functionality.
</p>
<p>A successful update returns TRUE.</p>
<p class="label">Format</p>
<p class="format">setProperty( PropName, Proparg_1 *[, Proparg_n] )</p>
<p class="comment">propName  = (string) case independent, rfc2445 component property names,
                    unknown propName will be regarded as <a href="#X-PROPERTY_PROP">X-property</a>.
Proparg_n = (mixed) property content</p>
<p class="label">Example</p>
<p class="example">$vevent = &amp; $vcalendar->newComponent( &quot;vevent&quot; );
$vevent->setProperty( &quot;dtstart&quot;
                    , array(&quot;year&quot;=&gt;2007,&quot;month&quot;=&gt;4,&quot;day&quot;=&gt;1,&quot;hour&quot;=&gt;19));
$vevent->setProperty( &quot;duration&quot;, 0, 0, 3 ));
$vevent->setProperty( &quot;LOCATION&quot;, &quot;Central Plaza&quot; );
$vevent->setProperty( &quot;summary&quot;, &quot;PHP summit&quot; );
.. .
</p>
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<a name="ACTION"></a><h3>3.2.5 ACTION</h3>
<p>
This property defines the action to be invoked when an <a href="#VALARM">VALARM</a> is triggered,
<br> &quot;AUDIO&quot; / &quot;DISPLAY&quot; / &quot;EMAIL&quot; / &quot;PROCEDURE&quot;. This property is REQUIRED and MUST NOT occur more than once.
</p>
<h5>Create ACTION</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createAction()</p>
<p class="label">Example</p>
<p class="example">$component->createAction();</p>
<h5>Delete ACTION</h5>
<p>Remove ACTION from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;Action&quot; )</p>
<p class="label">Example</p>
<p class="example">$valarm->deleteProperty( &quot;Action&quot; );</p>
<h5>Get ACTION</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;Action&quot; )</p>
<p class="comment">output = actionValue <span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;Action&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; actionValue<span class="ref">1</span>
              , &quot;params&quot; =&gt; xparams<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$action = $valarm->getProperty( &quot;action&quot; );</p>
<h5>Set ACTION</h5>
<p>Insert property value.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;Action&quot;, actionValue [, xparams ] )</p>
<p class="comment">actionValue<span class="ref">1</span> = (string) one of &quot;AUDIO&quot; / &quot;DISPLAY&quot; / &quot;EMAIL&quot; / &quot;PROCEDURE&quot;
xparams<span class="ref">2</span>     = (array) ( *[ (string) xparamkey =&gt; (string) xparamvalue ] )</p>
<p class="label">Example</p>
<p class="example">$valarm->setProperty( &quot;action&quot;, &quot;DISPLAY&quot; );</p>
<br>
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<a name="ATTACH"></a><h3>3.2.6 ATTACH</h3>
<p>
The property provides the capability to associate a document object with a <strong>calendar</strong> component. The property is
is REQUIRED and MUST NOT occur more than once in an &quot;ALARM&quot; (&quot;ACTION&quot; &quot;procedure&quot;),
OPTIONAL and MUST NOT occur more than once in an &quot;ALARM&quot; (&quot;ACTION&quot; &quot;audio&quot;) and
OPTIONAL and MAY occur more than once in <a href="#VEVENT">VEVENT</a>, <a href="#VTODO">VTODO</a>, <a href="#VJOURNAL">VJOURNAL</a> and <a href="#VALARM">VALARM</a> (&quot;ACTION&quot; &quot;email&quot;) components.
</p>
<p>
The default value type for ATTACH is URI. The value type can also be set to BINARY to indicate inline binary encoded content (params <span class="ref">2</span>).
</p>
<p>
If using other parameters than the recommended &QUOT;FMTTYPE&QUOT; and the mandatory &QUOT;ENCODING&QUOT; (=&QUOT;BASE64&QUOT;)and &QUOT;VALUE&QUOT; (=&QUOT;BINARY&QUOT;)
for an inline binary encoded attachment, 
please use only characters within the ASCII character set in parameter name and content, 
to ensure proper line folding when using <a href="#createCalendar">createCalendar</a> and/or <a href="#returnCalendar">returnCalendar</a>.
</p>
<h5>Create ATTACH</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createAttach()</p>
<p class="label">Example</p>
<p class="example">$component->createAttach();</p>
<h5>Delete ATTACH</h5>
<p>Remove ATTACH from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;ATTACH&quot; )</p>
<p class="label">Example 1</p>
<p class="example">$valarm->deleteProperty( &quot;ATTACH&quot; );</p>
<p class="label">Example 2</p>
Delete ATTACH property no 2.
<p class="format">$valarm->deleteProperty( &quot;ATTACH&quot;, 2 );</p>
<p class="label">Example 3</p>
Deleting all ATTACH properties.
<p class="example">while( $valarm->deleteProperty( &quot;ATTACH&quot; ))
  continue;</p>
<h5>Get ATTACH</h5>
<p>If set, returns property value(-s), otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;Attach&quot; )</p>
<p class="comment">output = attachValue<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;ATTACH&quot;, propOrderNo/FALSE , TRUE )</p>
<p class="comment">propOrderNo = (int) specific property value,
<p class="comment">output = array( &quot;value&quot;  =&gt; attachValue<span class="ref">1</span>
              , &quot;params&quot; =&gt; params<span class="ref">2</span> )</p>
<p class="label">Format 3</p>
<p class="format">getProperty( &quot;Attach&quot;, propOrderNo )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">Get propOrderNo ATTACH</p>
<p class="label">Example</p>
<p class="example">$attach = $valarm->getProperty( &quot;attach&quot; );</p>
<h5>Set ATTACH</h5>
<p>Insert property value. Parameters, if any, will be ordered as prescribed in rcf2445.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;attach&quot;, attachValue<span class="ref">1</span> [, params [, propOrderNo ]] )</p>
<p class="comment">attachValue<span class="ref">1</span> = (string) URI / inline binary encoded content
params<span class="ref">2</span>      = (array ) ( [ &quot;ENCODING&quot; =&gt; &quot;BASE64&quot;, &quot;VALUE&quot; =&gt; &quot;BINARY&quot; ]
                          [, &quot;FMTTYPE&quot;  =&gt; contentType ]
                          [,&nbsp;xparams ] )
contentType  = (string) The parameter value MUST be the TEXT for either an IANA
                        registered content type or a non-standard content type.
xparams      = (array) (*[ (string) xparamkey =&gt; (string) xparamvalue ]
propOrderNo  = (int) ordernumber, 1=1st, 2=2nd etc</p>
<p class="label">Example</p>
<p class="example">$vevent->setProperty( &quot;attach&quot;
                    , &quot;ftp://domain.com/pub/docs/agenda.doc&quot;
                    , array( &quot;FMTTYPE&quot; =&gt; &quot;application/binary&quot; ));</p>
<br>
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<a name="ATTENDEE"></a><h3>3.2.7 ATTENDEE</h3>
<p>
The property defines an "Attendee" within a <strong>calendar</strong> component and is OPTIONAL and MUST NOT occur more than once
in a VALARM (&quot;ACTION&quot; &quot;email&quot;), OPTIONAL and MAY occur more than once in <a href="#VEVENT">VEVENT</a>, <a href="#VTODO">VTODO</a>, <a href="#VJOURNAL">VJOURNAL</a> and <a href="#VFREEBUSY">VFREEBUSY</a> components.
</p>
<p>This value type for ATTENDEE is URI, a <strong>calendar</strong> user address.</p>
<h5>Create ATTENDEE</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createAttendee()</p>
<p class="label">Example</p>
<p class="example">$component->createAttendee();</p>
<h5>Delete ATTENDEE</h5>
<p>Remove ATTENDEE from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;ATTENDEE&quot; )</p>
<p class="label">Example 1</p>
<p>Delete (single/first) ATTENDEE property</p>
<p class="example">$valarm->deleteProperty( &quot;ATTENDEE&quot; );</p>
<p class="label">Example 2</p>
<p>Delete ATTENDEE property no 2.</p>
<p class="example">$valarm->deleteProperty( &quot;ATTENDEE&quot;, 2 );</p>
<p class="label">Example 3</p>
Deleting all ATTENDEE properties.
<p class="example">while( $valarm->deleteProperty( &quot;ATTENDEE&quot; ))
  continue;</p>
<h5>Get ATTENDEE</h5>
<p>If set, returns property value(-s), otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;Attendee&quot; )</p>
<p class="comment">output = attendeeValue <span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;ATTENDEE&quot;, propOrderNo/FALSE , TRUE )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; attendeeValue<span class="ref">1</span>
              , &quot;params&quot; =&gt; array( params<span class="ref">2</span> ))</p>
<p class="label">Format 3</p>
<p class="format">getProperty( &quot;ATTENDEE&quot;, propOrderNo )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">output = attendeeValue<span class="ref">1</span></p>
<p class="label">Example</p>
<p class="example">$attendee = $valarm->getProperty( &quot;attendee&quot; );</p>
<h5>Set ATTENDEE</h5>
<p>
Insert property value. If exist, default parameter values are removed after input (params<span class="ref">2</span>).
Property value must be prefixed by protocol (ftp://, http://,mailto:, file://.. . ref. rfc 1738 ), if missing, &quot;mailto:&quot; is set (ex. indicating an internet mail address).
Also MEMBER and DIR parameters must be prefixed by protocol. DELEGATED-TO, DELEGATED-FROM, SENT-BY parameters must use protocol &quot;mailto:&quot;, prefixed if missing (ex. indicating an internet mail address).
</p>
<p>Parameters, if any, will be ordered as prescribed in rcf2445.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;attendee&quot;, attendeeValue [, params [, propOrderNo ]] )</p>
<p class="comment">attendeeValue<span class="ref">1</span> = (string) a <strong>calendar</strong> user address, a URI as defined by
                         [RFC 1738] or any other IANA registered form
                         for a URI.
params<span class="ref">2</span>        = (array) ( [CUTYPE] [,MEMBER] [,ROLE] [,PARTSTAT]
                           [,RVSP] [,DELEGATED-TO] [,DELEGATED-FROM]
                           [,SENT-BY] [,CN] [,DIR] [,LANGUAGE]
                           [,xparams] )
CUTYPE        = "CUTYPE" =&gt; &quot;INDIVIDUAL&quot;
                            (An individual, <b>Default</b>)
                          / &quot;GROUP&quot;
                            (A group of individuals)
                          / &quot;RESOURCE&quot;
                            (A physical resource)
                          / &quot;ROOM&quot;
                            (A room resource)
                          / &quot;UNKNOWN&quot;
                            (Otherwise not known)
                          / (string) x-name
                            (Experimental type)
                          / iana-token
                            (string) (Other IANA registered type)
MEMBER        = "MEMBER" =&gt; array( *[ (string) &quot;single member
                            of the group or list membership&quot;])
ROLE          = "ROLE"   =&gt; &quot;CHAIR&quot;
                            (Indicates chair of the <strong>calendar</strong>
                             entity)
                          / &quot;REQ-PARTICIPANT&quot;
                            (required participation, <b>Default</b>)
                          / &quot;OPT-PARTICIPANT&quot;
                            (optional participation)
                          / &quot;NON-PARTICIPANT&quot;
                            (information purposes only)
                          / (string) x-name
                            (Experimental role)
                          / (string) iana-token
                            (Other IANA role)
PARTSTAT       = &quot;PARTSTAT&quot; =&gt; &quot;NEEDS-ACTION&quot;
                            (Event needs action, <b>Default</b>)
                          / &quot;ACCEPTED&quot;
                            (Event accepted)
                          / &quot;DECLINED&quot;
                            (Event declined)
                          / &quot;TENTATIVE&quot;
                            (Event tentatively accepted)
                          / &quot;DELEGATED&quot;
                            (Event delegated)
                          / &quot;NEEDS-ACTION&quot;
                            (To-do needs action, <b>Default</b>)
                          / &quot;ACCEPTED&quot;
                            (To-do accepted)
                          / &quot;DECLINED&quot;
                            (To-do declined)
                          / &quot;TENTATIVE&quot;
                            (To-do tentatively accepted)
                          / &quot;DELEGATED&quot;
                            (To-do delegated)
                          / &quot;COMPLETED&quot;
                            (To-do completed.
                              <a href="#COMPLETED">COMPLETED</a> property
                                 has date/time completed)
                          / &quot;IN-PROCESS&quot;
                            (To-do in process of being completed)
                          / &quot;NEEDS-ACTION&quot;
                            (Journal needs action, <b>Default</b>)
                          / &quot;ACCEPTED&quot;
                            (Journal accepted)
                          / &quot;DECLINED&quot;
                            (Journal declined)
                          / (string) x-name
                            (Experimental status)
                          / (string) iana-token
                            (Other IANA registered status)
RSVP           = &quot;RSVP&quot; =&gt; (string) &quot;TRUE&quot;
                                  / &quot;FALSE&quot;, <b>Default</b> (reply expectation)
DELEGATED-TO   = &quot;DELEGATED-TO&quot; =&gt; array(*[(string) &quot;single <strong>calendar</strong> user
                                            to specified by the property
                                            has delegated participation&quot;])
DELEGATED-FROM = &quot;DELEGATED-FROM&quot; =&gt; array( *[ (string) &quot;single <strong>calendar</strong> user that
                                                have delegated their
                                                participation to the
                                                <strong>calendar</strong> user specified
                                                by the property&quot; ] )
SENT-BY        = &quot;SENT-BY&quot; =&gt; (string) single <strong>calendar</strong> user that is
                              acting on behalf
                              of the <strong>calendar</strong> user
                              specified by the property&quot;
LANGUAGE       = &quot;LANGUAGE&quot; =&gt; (string) &quot;language for text values in CN parameter&quot;
CN             = &quot;CN&quot; =&gt; (string) &quot;common name to be associated with the <strong>calendar</strong>
                          user specified by the property&quot;
DIR            = &quot;DIR&quot; =&gt; (string) &quot;reference to a directory entry associated with
                           the <strong>calendar</strong> user specified by the property&quot;
xparams        = *[ (string) xparamkey =&gt; (string) xparamvalue ]
propOrderNo    = (int) ordernumber, 1=1st, 2=2nd etc</p>
<p>
See rules in detail in <a href="http://kigkonsult.se/downloads/dl.php?f=rfc2445" title="RFC2445" target="_blank">RFC2445</a> - Internet Calendaring and Scheduling Core Object Specification (iCalendar).
</p>
<p class="label">Example</p>
<p class="example">$vevent->setProperty( &quot;attendee&quot;
                    , &quot;hide@address.com&quot;
$vevent->setProperty( &quot;attendee&quot;
                    , &quot;hide@address.com&quot;
                    , array( &quot;cutype&quot;   =&gt; &quot;INDIVIDUAL&quot;
                           , &quot;member&quot;   =&gt; array( &quot;hide@address.com&quot;
                                                , &quot;hide@address.com&quot;
                                                , &quot;hide@address.com&quot; )
                           , &quot;role&quot;     =&gt; &quot;CHAIR&quot;
                           , &quot;PARTSTAT&quot; =&gt; &quot;ACCEPTED&quot;
                           , &quot;RSVP&quot;     =&gt; &quot;TRUE&quot;
                           , &quot;DELEgated-to&quot; =&gt; array( &quot;hide@address.com&quot;
                                                    , &quot;hide@address.com&quot;
                                                    , &quot;hide@address.com&quot; )
                           , &quot;delegateD-FROM&quot; =&gt;array( &quot;hide@address.com&quot;
                                                     , &quot;hide@address.com&quot;)
                           , &quot;SENT-BY&quot;  =&gt; &quot;hide@address.com&quot;
                           , &quot;LANGUAGE&quot; =&gt; &quot;us-EN&quot;
                           , &quot;CN&quot;       =&gt; &quot;John Doe&quot;
                           , &quot;DIR&quot;      =&gt; &quot;http://www.ical.net/info.doc&quot;
                           , &quot;x-agenda&quot; =&gt; &quot;status reports&quot; <span class="comment">// xparam</span>
                           , &quot;x-length&quot; =&gt; &quot;15 min&quot;  ));    <span class="comment">// xparam</span>
</p>
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<a name="CATEGORIES"></a><h3>3.2.8 CATEGORIES</h3>
<p>
This property defines the categories for a <strong>calendar</strong> component and is OPTIONAL and MAY occur more than once in <a href="#VEVENT">VEVENT</a>, <a href="#VTODO">VTODO</a> and <a href="#VJOURNAL">VJOURNAL</a> components.<br><br>
The value type for CATEGORIES is TEXT.
</p>
<h5>Create CATEGORIES</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createCategories()</p>
<p class="label">Example</p>
<p class="example">$component->createCategories();</p>
<h5>Delete CATEGORIES</h5>
<p>Remove CATEGORIES from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;CATEGORIES&quot; )</p>
<p class="label">Example 1</p>
<p>Delete (single/first) CATEGORIES property</p>
<p class="example">$vevent->deleteProperty( &quot;CATEGORIES&quot; );</p>
<p class="label">Example 2</p>
<p>Delete CATEGORIES property no 2.</p>
<p class="example">$vevent->deleteProperty( &quot;CATEGORIES&quot;, 2 );</p>
<p class="label">Example 3</p>
<p>Deleting all CATEGORIES properties.</p>
<p class="example">while( $vevent->deleteProperty( &quot;CATEGORIES&quot; ))
  continue;</p>
<h5>Get CATEGORIES</h5>
<p>If set, returns property value(-s), otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;CATEGORIES&quot; )</p>
<p class="comment">output = categoryValue<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;CATEGORIES&quot;, propOrderNo/FALSE , TRUE )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; categories<span class="ref">1</span>
              , &quot;params&quot; =&gt; params<span class="ref">2</span> )</p>
<p class="label">Format 3</p>
<p class="format">getProperty( &quot;CATEGORIES&quot;, propOrderNo )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">Get propOrderNo CATEGORIES</p>
<p class="label">Example</p>
<p class="example">$categories = $valarm->getProperty( &quot;categories&quot; );</p>
<h5>Set CATEGORIES</h5>
<p>Insert property value. Parameters, if any, will be ordered as prescribed in rcf2445.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;categories&quot;, categories [, params [, propOrderNo ]] )</p>
<p class="comment">categories<span class="ref">1</span>   = (string) categoryValue / (array) ( *categoryValue )
categoryValue<span class="ref"> </span>= (string) textual categories or subtypes of the <strong>calendar</strong> component,
                can be specified as a list of categories
                separated by the COMMA character
params<span class="ref">2</span>       = (array) ( [&quot;LANGUAGE&quot; =&gt; (string) &quot;&lt;lang&gt;&quot;][, xparams] )
xparams<span class="ref"> </span>      = *[ (string) xparamkey =&gt; (string) xparamvalue ]
propOrderNo<span class="ref"> </span>  = (int) ordernumber, 1=1st, 2=2nd etc</p>
<p class="label">Example</p>
<p class="example">$vevent->setProperty( &quot;categories&quot;, &quot;project_x&quot; );</p>
<br>
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<a name="CLASS"></a><h3>3.2.9 CLASS</h3>
<p>
This property defines the access classification for a <strong>calendar</strong> component and is OPTIONAL
and MUST NOT occur more than once in <a href="#VEVENT">VEVENT</a>, <a href="#VTODO">VTODO</a> and <a href="#VJOURNAL">VJOURNAL</a> components.
</p>
<h5>Create CLASS</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createClass()</p>
<p class="label">Example</p>
<p class="example">$component->createClass();</p>
<h5>Delete CLASS</h5>
<p>Remove CLASS from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;CLASS&quot; )</p>
<p class="label">Example</p>
<p class="example">$vjournal->deleteProperty( &quot;CLASS&quot; );</p>
<h5>Get CLASS</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;CLASS&quot; )</p>
<p class="comment">output = classValue<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;CLASS&quot;, FALSE , TRUE )</p>
<p class="comment">output = array &quot;value&quot;   =&gt; classValue<span class="ref">1</span>
              , &quot;params&quot; =&gt; xparams<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$class = $valarm->getProperty( &quot;class&quot; );</p>
<h5>Set CLASS</h5>
<p>Insert property value.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;class&quot;, classvalue [, xparams ] )</p>
<p class="comment">classvalue<span class="ref">1</span> = &quot;PUBLIC&quot;
            / &quot;PRIVATE&quot;
            / &quot;CONFIDENTIAL&quot;
            / (string) iana-token
            / (string) x-name
xparams<span class="ref">2</span>    = (array) ( *[ (string) xparamkey =&gt; (string) xparamvalue ] )</p>
<p class="label">Example</p>
<p class="example">$vevent->setProperty( &quot;class&quot;, &quot;CONFIDENTIAL&quot; );</p>
<br>
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<a name="COMMENT"></a><h3>3.2.10 COMMENT</h3>
<p>
This property specifies non-processing information intended to provide a comment to the <strong>calendar</strong> user
and is OPTIONAL and MAY occur more than once in <a href="#VEVENT">VEVENT</a>, <a href="#VTODO">VTODO</a>, <a href="#VJOURNAL">VJOURNAL</a>, <a href="#VFREEBUSY">VFREEBUSY</a>, <a href="#VTIMEZONE">STANDARD</a> and <a href="#VTIMEZONE">DAYLIGHT</a> components.
</p>
<p>The value type for COMMENT is TEXT.</p>
<h5>Create COMMENT</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createComment()</p>
<p class="label">Example</p>
<p class="example">$component->createComment();</p>
<h5>Delete COMMENT</h5>
<p>Remove COMMENT from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;COMMENT&quot; )</p>
<p class="label">Example 1</p>
<p>Delete (single/first) COMMENT property</p>
<p class="example">$vevent->deleteProperty( &quot;COMMENT&quot; );</p>
<p class="label">Example 2</p>
<p>Delete COMMENT property no 2.</p>
<p class="example">$vevent->deleteProperty( &quot;COMMENT&quot;, 2 );</p>
<p class="label">Example 3</p>
<p>Deleting all COMMENT properties.</p>
<p class="example">while( $vevent->deleteProperty( &quot;COMMENT&quot; ))
  continue;</p>
<h5>Get COMMENT</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;COMMENT&quot; )</p>
<p class="comment">output = commentValue<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;COMMENT&quot;, propOrderNo/FALSE , TRUE )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; commentValue<span class="ref">1</span>
              , &quot;params&quot; =&gt; params<span class="ref">2</span> )</p>
<p class="label">Format 3</p>
<p class="format">getProperty( &quot;COMMENT&quot;, propOrderNo )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">Get propOrderNo COMMENT</p>
<p class="label">Example</p>
<p class="example">$comment = $vevent->getProperty( &quot;comment&quot; );</p>
<h5>Set COMMENT</h5>
<p>Insert property value. Parameters, if any, will be ordered as prescribed in rcf2445.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;comment&quot;, commentValue [, params [, propOrderNo ]] )</p>
<p class="comment">commentValue<span class="ref">1</span> = (string) Value type Text
params<span class="ref">2</span>       = (array) ( 
                   [ &quot;ALTREP&quot; =&gt; (string) &quot;&lt;an alternate text representation, URI&gt;&quot;]
                   [, &quot;LANGUAGE&quot; =&gt; (string) &quot;&lt;lang&gt;&quot;]
                   [, xparams ] )
xparams       = *[ (string) xparamkey =&gt; (string) xparamvalue ]
propOrderNo   = (int) ordernumber, 1=1st, 2=2nd etc</p>
<p class="label">Example</p>
<p class="example">$vevent->setProperty( &quot;comment&quot;, &quot;this is a comment&quot; );</p>
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<a name="COMPLETED"></a><h3>3.2.11 COMPLETED</h3>
<p>
This property defines the date and time that a <a href="#VTODO">VTODO</a> was actually completed and is OPTIONAL and MUST NOT occur more than once.
</p>
<p>The value type for COMPLETED is <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME.</p>
<h5>Create COMPLETED</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createCompleted()</p>
<p class="label">Example</p>
<p class="example">$component->createCompleted();</p>
<h5>Delete COMPLETED</h5>
<p>Remove COMPLETED from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;COMPLETED&quot; )</p>
<p class="label">Example</p>
<p class="example">$vtodo->deleteProperty( &quot;COMPLETED&quot; );</p>
<h5>Get COMPLETED</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;COMPLETED&quot; )</p>
<p class="comment">output = completedDate<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;COMPLETED&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; completedDate<span class="ref">1</span>
              , &quot;params&quot; =&gt; xparams<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$completed = $vtodo->getProperty( &quot;completed&quot; );</p>
<h5>Set COMPLETED</h5>
<p>
Insert property value. Input date is always a <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME or,
if &quot;offset&quot; parameter is used, converted to a <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME.
Notice, use function <a href="#transformDateTime">transformDateTime</a> to change a local datetime to UTC datetime.
</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;completed&quot;, completedDate [, xparams ] )</p>
<p class="comment">completedDate<span class="ref">1</span> = (array) ( &quot;year&quot;  =&gt; (int) year
                         , &quot;month&quot; =&gt; (int) month
                         , &quot;day&quot;   =&gt; (int) day
                        [, &quot;hour&quot;  =&gt; (int) hour
                         , &quot;min&quot;   =&gt; (int) min
                         , &quot;sec&quot;   =&gt; (int) sec
                         , &quot;tz&quot;    =&gt; offset ]] )
completedDate  = (int) year
               , (int) month
               , (int) day
              [, (int) hour
               , (int) min
               , (int) sec ]
completedDate  = (array) ( (int) year
                         , (int) month
                         , (int) day
                        [, (int) hour
                         , (int) min
                         , (int) sec
                        [, offset ]] )
completedDate  = (array) ( &quot;timestamp&quot; =&gt; (int) timestamp [, &quot;tz&quot; => offset])
completedDate  = (string) date/datetime string<span class="ref">*</span>
offset         = (int) (+/-)HHmm[ss], local date + UTC offset =&gt; <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME
xparams<span class="ref">2</span>       = (array) ( *[ (string) xparamkey =&gt; (string) xparamvalue ] )
<br>date/datetime string<span class="ref">*</span> recommended formats
    &quot;20110625&quot;,            &quot;2011-06-25&quot;,          &quot;2011/06/26&quot;
    &quot;20110625051015&quot;,      &quot;20110625 051015&quot;
    &quot;20110625T051015&quot;,     &quot;20110625t051015&quot;
    &quot;2011-06-25 05:10:15&quot;, &quot;2011-06-25T05:10:15&quot;, &quot;2011-06-25t05:10:15&quot;
    &quot;2011/06/25 05:10:15&quot;, &quot;2011/06/25T05:10:15&quot;, &quot;2011/06/25t05:10:15&quot;
    trailing characters (digits), if exists, will be interpreted as offset
    other string formats, acceptable by strtotime function, may (would) work
    <span class="ref">(notice <a href="#date_restriction">date restriction</a>)</span></p>
<p class="label">Example 1</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;);
$vcalendar = new vcalendar( $config );
$vtodo = &amp; $vcalendar->newComponent( &quot;vtodo&quot; );
.. .
$vtodo->setProperty( &quot;completed&quot;, 2006, 8, 10, 10, 0, 0 );
  // <span class="ref">10 august 2006 10.00  UTC</span></p>
<p class="label">Example 2</p>
<p class="example">$date = array(&quot;year&quot; =&gt; 2006, &quot;month&quot; =&gt; 10, &quot;day&quot; =&gt; 10,
              &quot;hour&quot; =&gt; 10, &quot;min&quot; =&gt; 0, &quot;sec&quot; =&gt; 0, &quot;tz&quot; =&gt; &quot;+0200&quot;);
 // <span class="ref">local date + UTC offset =&gt; <a class="ref" href="#DATE_WITH_UTC_TIME">UTC</a>DATE-TIME</span>
$vtodo->setProperty( &quot;completed&quot;, $date );</p>
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<a name="CONTACT"></a><h3>3.2.12 CONTACT</h3>
<p>
The property is used to represent textual contact information or alternately a reference to textual contact information associated with the <strong>calendar</strong> component. The property is OPTIONAL and MUST NOT occur more than once in a VFREEBUSY or MAY occur more than once  in <a href="#VEVENT">VEVENT</a>, <a href="#VTODO">VTODO</a> and <a href="#VJOURNAL">VJOURNAL</a> components.
</p>
<p>The value type for CONTACT is TEXT.</p>
<h5>Create CONTACT</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createContact()</p>
<p class="label">Example</p>
<p class="example">$component->createContact();</p>
<h5>Delete CONTACT</h5>
<p>Remove CONTACT from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;CONTACT&quot; )</p>
<p class="label">Example 1</p>
<p>Delete (single/first) CONTACT property<p>
<p class="example">$vevent->deleteProperty( &quot;CONTACT&quot; );</p>
<p class="label">Example 2</p>
<p>Delete CONTACT property no 2.</p>
<p class="example">$vevent->deleteProperty( &quot;CONTACT&quot;, 2 );</p>
<p class="label">Example 3</p>
<p>Deleting all CONTACT properties.</p>
<p class="example">while( $vevent->deleteProperty( &quot;CONTACT&quot; ))
  continue;</p>
<h5>Get CONTACT</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;CONTACT&quot; )</p>
<p class="comment">output = contactValue<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;CONTACT&quot;, propOrderNo/FALSE , TRUE )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; contactValue<span class="ref">1</span>
              , &quot;params&quot; =&gt; params<span class="ref">2</span> )</p>
<p class="label">Format 3</p>
<p class="format">getProperty( &quot;CONTACT&quot;, propOrderNo )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">Get propOrderNo CONTACT</p>
<p class="label">Example</p>
<p class="example">$contact = $vevent->getProperty( &quot;contact&quot; );</p>
<h5>Set CONTACT</h5>
<p>Insert property value. Parameters, if any, will be ordered as prescribed in rcf2445.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;contact&quot;, contactValue [, params [, propOrderNo ]] )</p>
<p class="comment">contactValue<span class="ref">1</span> = (string) Value type TEXT
params<span class="ref">2</span>       = (array) ( 
                   [ &quot;ALTREP&quot; =&gt; (string) &quot;&lt;an alternate text representation, URI&gt;&quot;]
                   [, &quot;LANGUAGE&quot; =&gt; (string) &quot;&lt;lang&gt;&quot;]
                   [, xparams] )
xparams       = *[ (string) xparamkey =&gt; (string) xparamvalue ]
propOrderNo   = (int) ordernumber, 1=1st, 2=2nd etc</p>
<p class="label">Example</p>
<p class="example">$c->setProperty( &quot;contact&quot;, &quot;tel 012-34 56 789&quot; )</p>
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<a name="CREATED"></a><h3>3.2.13 CREATED</h3>
<p>
This property specifies the date and time that the <strong>calendar</strong> information was created by the <strong>calendar</strong> user agent in the <strong>calendar</strong> store. Note: This is analogous to the creation date and time for a file in the file system. The property is OPTIONAL and MUST NOT occur more than once in <a href="#VEVENT">VEVENT</a>, <a href="#VTODO">VTODO</a> and <a href="#VJOURNAL">VJOURNAL</a> components.
</p>
<p>The value type for CREATED is <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME.</p>
<h5>Create CREATED</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createCreated()</p>
<p class="label">Example</p>
<p class="example">$component->createCreated();</p>
<h5>Delete CREATED</h5>
<p>Remove CREATED from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;CREATED&quot; )</p>
<p class="label">Example</p>
<p class="example">$vevent->deleteProperty( &quot;CREATED&quot; );</p>
<h5>Get CREATED</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;CREATED&quot; )</p>
<p class="comment">output = createdDate<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;CREATED&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; createdDate<span class="ref">1</span>
              , &quot;params&quot; =&gt; xparams<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$created = $vevent->getProperty( &quot;CREATED&quot; );</p>
<h5>Set CREATED</h5>
<p>
Insert property value. Input date is always a <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME or,
if &quot;offset&quot; parameter is used, converted to a <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME.
Notice, use function <a href="#transformDateTime">transformDateTime</a> to change a local datetime to UTC datetime.
</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;created&quot;, [ createdDate [, xparams ]] )</p>
<p class="comment">createdDate<span class="ref">1</span> = (array) ( &quot;year&quot;  =&gt; (int) year
                       , &quot;month&quot; =&gt; (int) month
                       , &quot;day&quot;   =&gt; (int) day
                      [, &quot;hour&quot;  =&gt; (int) hour
                       , &quot;min&quot;   =&gt; (int) min
                       , &quot;sec&quot;   =&gt; (int) sec
                       , &quot;tz&quot;    =&gt; offset ]] )
createdDate  = (int) year
             , (int) month
             , (int) day
            [, (int) hour
             , (int) min
             , (int) sec ]
createdDate  = (array) ( (int) year
                       , (int) month
                       , (int) day
                      [, (int) hour
                       , (int) min
                       , (int) sec
                      [, offset ]] )
createdDate  = (array) ( &quot;timestamp&quot; =&gt; (int) timestamp [, &quot;tz&quot; => offset ])
createdDate  = (string) date/datetime string<span class="ref">*</span>
offset       = (int) (+/-)HHmm[ss], local date + UTC offset =&gt; <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME
xparams<span class="ref">2</span>     = array( *[ (string) xparamkey =&gt; (string) xparamvalue ] )
<br>date/datetime string<span class="ref">*</span> recommended formats
    &quot;20110625&quot;,            &quot;2011-06-25&quot;,          &quot;2011/06/26&quot;
    &quot;20110625051015&quot;,      &quot;20110625 051015&quot;
    &quot;20110625T051015&quot;,     &quot;20110625t051015&quot;
    &quot;2011-06-25 05:10:15&quot;, &quot;2011-06-25T05:10:15&quot;, &quot;2011-06-25t05:10:15&quot;
    &quot;2011/06/25 05:10:15&quot;, &quot;2011/06/25T05:10:15&quot;, &quot;2011/06/25t05:10:15&quot;
    trailing characters (digits), if exists, will be interpreted as offset
    other string formats, acceptable by strtotime function, may (would) work
    <span class="ref">(notice <a href="#date_restriction">date restriction</a>)</span></p>
<p class="label">Example 1</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
$vtodo = &amp; $vcalendar->newComponent( &quot;vtodo&quot; );
.. .
$vtodo->setProperty( &quot;created&quot;, 2006, 8, 11, 14, 30, 35 );
 // <span class="ref">11 august 2006 14.30.35 UTC</span>	</p>
<p class="label">Example 2</p>
<p class="example">$date = array(&quot;year&quot; =&gt; 2006, &quot;month&quot; =&gt; 10, &quot;day&quot; =&gt; 10,
              &quot;hour&quot; =&gt; 10, &quot;min&quot; =&gt; 0, &quot;sec&quot; =&gt; 0, &quot;tz&quot; =&gt; &quot;+0200&quot;);
 // <span class="ref">local date + UTC offset =&gt; <a class="ref" href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME</span>
$vtodo->setProperty( &quot;created&quot;, $date );
.. .</p>
<p class="label">Example 3</p>
<p class="example">$vevent->setProperty( &quot;created&quot; );
 // <span class="ref">current UTC date-time is set if called without parameters</span></p>
<br>
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<a name="DESCRIPTION"></a><h3>3.2.14 DESCRIPTION</h3>
<p>
This property provides a more complete textual description of the <strong>calendar</strong> component, 
than that provided by the <a href="#SUMMARY">SUMMARY</a> property (, analogous to a mail BODY). 
The property is OPTIONAL, MUST NOT occur more than once within <a href="#VEVENT">VEVENT</a>, 
<a href="#VTODO">VTODO</a> or <a href="#VALARM">VALARM</a> (PROCEDURE) but can be specified multiple 
times within a <a href="#VJOURNAL">VJOURNAL</a> <strong>calendar</strong> component. The property is REQUIRED in  <a href="#VALARM">VALARM</a> (DISPLAY, EMAIL) component.
</p>
<p>The value type for DESCRIPTION is TEXT.</p>
<h5>Create DESCRIPTION</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createDescription()</p>
<p class="label">Example</p>
<p class="example">$component->createDescription();</p>
<h5>Delete DESCRIPTION</h5>
<p>Remove DESCRIPTION from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;DESCRIPTION&quot; )</p>
<p class="label">Example 1</p>
<p>Delete (single/first) DESCRIPTION property.</p>
<p class="example">$vevent->deleteProperty( &quot;DESCRIPTION&quot; );</p>
<p class="label">Example 2</p>
<p>Delete DESCRIPTION property no 2.</p>
<p class="example">$vjournal->deleteProperty( &quot;DESCRIPTION&quot;, 2 );</p>
<p class="label">Example 3</p>
<p>Deleting all DESCRIPTION properties.</p>
<p class="example">while( $vjournal->deleteProperty( &quot;DESCRIPTION&quot; ))
  continue;</p>
<h5>Get DESCRIPTION</h5>
<p>If set, returns property value(-s), otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;DESCRIPTION&quot; )</p>
<p class="comment">output = descriptionValue<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;DESCRIPTION&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; descriptionValue<span class="ref">1</span>
              , &quot;params&quot; =&gt; params<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$description = $vevent->getProperty( &quot;description&quot; );</p>
<h5>Set DESCRIPTION</h5>
<p>Insert property value.</p>
<br>
Parameters, if any, will be ordered as prescribed in rcf2445.
<p class="label">Format</p>
<p class="format">setProperty( &quot;description&quot;, descriptionValue [, params [, propOrderNo ]] )</p>
<p class="comment">descriptionValue<span class="ref">1</span> = (string) Value type TEXT
params<span class="ref">2</span>           = (array) ( 
                    [ &quot;ALTREP&quot; =&gt; (string) &quot;&lt;an alternate text representation, URI&gt;&quot;]
                    [, &quot;LANGUAGE&quot; =&gt; (string) &quot;&lt;lang&gt;&quot;]
                    [, xparams] )
xparams         = *[ (string) xparamkey =&gt; (string) xparamvalue ]
propOrderNo      = (int) ordernumber, 1=1st, 2=2nd etc</p>
<p class="label">Example</p>
<p class="example">$vevent->setProperty( &quot;description&quot;, &quot;This is a description&quot; );</p>
<br>
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<a name="DTEND"></a><h3>3.2.15 DTEND</h3>
<p>
This property specifies the date and time that a <strong>calendar</strong> component ends.
The property is OPTIONAL and MUST NOT occur more than once in VFREEBUSY and VEVENT. In VEVENT, it only occurs
if DURATION NOT occurs.
</p>
<p>The default value type for DTEND is DATE-TIME, can be set to a DATE value type.</p>
<p>
Notice that an end date without a time is in effect midnight of the day before the date, 
so for timeless dates, use the date following the event date for it to be correct. 
For an &quot;all-day event&quot; and using timeless dates, the DTEND is equal DTSTART plus one day, 
example all-day event (2007-12-01)<br>DTSTART;VALUE=DATE:20071201<br> DTEND;VALUE=DATE:20071202.
</p>
<h5>Create DTEND</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createDtend()</p>
<p class="label">Example</p>
<p class="example">$component->createDtend();</p>
<h5>Delete DTEND</h5>
<p>Remove DTEND from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;DTEND&quot; )</p>
<p class="label">Example</p>
<p class="example">$vevent->deleteProperty( &quot;DTEND&quot; );</p>
<h5>Get DTEND</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;DTEND&quot; )</p>
<p class="comment">output = dtendDate<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;DTEND&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; dtendDate<span class="ref">1</span>
              , &quot;params&quot; =&gt; params<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$dtend = $vevent->getProperty( &quot;dtend&quot; );</p>
<h5>Set DTEND</h5>
<p>
Insert property value. If DATE value type is expected, &quot;VALUE&quot; = &quot;DATE&quot; <b>must</b> be set
(in params<span class="ref">2</span>) otherwise DATE-TIME (default) value type is set.
</p>
<p>
If no timezone parameter (tz or tzidparam below) is set (i.e.local time) and config <a href="#dTZID">TZID</a> is set,
date-time values will be set WITH timezone from config. 
Notice, use function <a href="#transformDateTime">transformDateTime</a> to change a datetime from one time zone to another.
</p>
<p>Parameters, if any, will be ordered as prescribed in rcf2445.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;dtend&quot;, dtendDate [, params<span class="ref">2</span> ] )
<p class="comment">dtendDate<span class="ref">1</span>    = (array) ( &quot;year&quot;  =&gt; (int) year
                        , &quot;month&quot; =&gt; (int) month
                        , &quot;day&quot;   =&gt; (int) day
                       [, &quot;hour&quot;  =&gt; (int) hour
                        , &quot;min&quot;   =&gt; (int) min
                        , &quot;sec&quot;   =&gt; (int) sec
                       [, &quot;tz&quot;    =&gt; tz ]] )
dtendDate     = (int) year
              , (int) month
              , (int) day
             [, (int) hour
              , (int) min
              , (int) sec
             [, tz ]]
dtendDate     = array( (int) year
                     , (int) month
                     , (int) day
                    [, (int) hour
                     , (int) min
                     , (int) sec
                    [, tz ]] )
dtendDate     = (array) ( &quot;timestamp&quot; =&gt; (int) timestamp [,&quot;tz&quot; =&gt; tz])
dtendDate     = (string) date/datetime string<span class="ref">*</span>
dtendDate     : Within the "VFREEBUSY" <strong>calendar</strong> component,
                the time MUST be specified in the <a href="#DATE_WITH_UTC_TIME">UTC</a> time format.
tz            = (string) &lt;timezone  identifier&gt; / offset
                (timezone will be used as tzidparam (below), if tzidparam not set)
offset        = (int) (+/-)HHmm[ss], local date + UTC offset =&gt; <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME
params<span class="ref">2</span>       = (array) ([ tzidparam/datetimeparam/dateparam ] *[,xparams])
tzidparam     = &quot;TZID&quot; =&gt; (string) &lt;timezone identifier&gt;
                // <span class="ref">output as local date-time with timezone identifier</span>
                // <span class="ref">if tzidparam=&quot;GMT&quot;/&quot;UTC&quot; then</span>
                // <span class="ref">output date-time are suffixed by 'Z'</span>
datetimeparam = &quot;VALUE&quot; =&gt; &quot;DATE-TIME&quot; // <span class="ref">default, output as date-time</span>
dateparam     = &quot;VALUE&quot; =&gt; &quot;DATE&quot; // <span class="ref">output as DATE, ex. all-day event</span>
xparams       = (string) xparamkey =&gt; (string) xparamvalue
<br>date/datetime string<span class="ref">*</span> recommended formats
    &quot;20110625&quot;,            &quot;2011-06-25&quot;,          &quot;2011/06/26&quot;
    &quot;20110625051015&quot;,      &quot;20110625 051015&quot;
    &quot;20110625T051015&quot;,     &quot;20110625t051015&quot;
    &quot;2011-06-25 05:10:15&quot;, &quot;2011-06-25T05:10:15&quot;, &quot;2011-06-25t05:10:15&quot;
    &quot;2011/06/25 05:10:15&quot;, &quot;2011/06/25T05:10:15&quot;, &quot;2011/06/25t05:10:15&quot;
    trailing characters (digits), if exists, will be interpreted as offset/timezone
    other string formats, acceptable by strtotime function, may (would) work
    <span class="ref">(notice <a href="#date_restriction">date restriction</a>)</span></p>
<p class="label">Example 1</p>
<p class="example">$vevent->setProperty( &quot;dtend&quot;
                    , 2006, 8, 11, 16, 30, 0 );
  <span class="ref">// 11 august 2006 16.30.00 local date</span></p>
<p class="label">Example 2</p>
<p class="example">$vfreebusy->setProperty( &quot;dtend&quot;
                       , 2006, 8, 11, 16, 30, 0, &quot;-040000&quot; );
  <span class="ref">// 11 august 2006 16.30.00 -040000 :
     local date + UTC offset =&gt; <a class="ref" href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME</span></p>
<p class="label">Example 3</p>
<p class="example">$vevent->setProperty( &quot;dtend&quot;
                    , array( &quot;year&quot; =&gt;, 2006, &quot;month&quot; =&gt; 8, &quot;day&quot;=&gt; 11 )
                    , array( &quot;VALUE&quot; =&gt; &quot;DATE&quot; ));
  <span class="ref">// end of one or more all-day events</span></p>
<br>
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<a name="DTSTAMP"></a><h3>3.2.16 DTSTAMP</h3>
<p>
The property indicates the date/time that the instance of the <strong>iCalendar</strong> object was created and is OPTIONAL and 
MUST NOT occur more than once in <a href="#VEVENT">VEVENT</a>, <a href="#VTODO">VTODO</a>, <a href="#VJOURNAL">VJOURNAL</a> 
and <a href="#VFREEBUSY">VFREEBUSY</a> components. However, DTSTAMP is <b>AUTOMATICALLY</b> GENERATED in iCalcreator.
</p>
<p>
DTSTAMP may be required when importing iCal files into some <strong>calendar</strong> software<br>(MS etc.),
as well as (<strong>calendar</strong>) <a href="#X-PROPERTY">x-properties</a> "X-WR-CALNAME", "X-WR-CALDESC" and<br>"X-WR-TIMEZONE",
<a href="#METHOD">METHOD</a> property (value PUBLISH etc.) and the (also created) <a href="#UID">UID</a> property.
</p>
<p>The value type for DTSTAMP is <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME.</p>
<h5>Create DTSTAMP</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createDtstamp()</p>
<p class="label">Example</p>
<p class="example">$component->createDtstamp();</p>
<h5>Delete DTSTAMP</h5>
<p>
If DTSTAMP if removed from a component, DTSTAMP will automatically be recreated when output functions like createDtstamp (above), 
<a href="#createCalendar">createCalendar</a>, <a href="#returnCalendar">returnCalendar</a> or <a href="#saveCalendar">saveCalendar</a> is executed.
</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;DTSTAMP&quot; )</p>
<p class="label">Example</p>
<p class="example">$vevent->deleteProperty( &quot;DTSTAMP&quot; );</p>
<h5>Get DTSTAMP</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;DTSTAMP&quot; )</p>
<p class="comment">output = dtstampDate<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;DTSTAMP&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; dtstampDate<span class="ref">1</span>
              , &quot;params&quot; =&gt; xparams<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$dtstamp = $vevent->getProperty( &quot;dtstamp&quot; );</p>
<h5>Set DTSTAMP</h5>
<p>
Insert property value. Input date is always a <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME or,
if &quot;offset&quot; parameter is used, converted to a <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME.
Notice, use function <a href="#transformDateTime">transformDateTime</a> to change a (local) datetime to UTC time zone.
</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;dtstamp&quot;, dtstampDate [, xparams ] )</p>
<p class="comment">dtstampDate<span class="ref">1</span> = (array) ( &quot;year&quot;  =&gt; (int) year
                       , &quot;month&quot; =&gt; (int) month
                       , &quot;day&quot;   =&gt; (int) day
                      [, &quot;hour&quot;  =&gt; (int) hour
                       , &quot;min&quot;   =&gt; (int) min
                       , &quot;sec&quot;   =&gt; (int) sec
                       , &quot;tz&quot;    =&gt; offset ]] )
dtstampDate  = (int) year
             , (int) month
             , (int) day
            [, (int) hour
             , (int) min
             , (int) sec ]
dtstampDate  = (array) ( (int) year
                       , (int) month
                       , (int) day
                      [, (int) hour
                       , (int) min
                       , (int) sec
                      [, offset ]] )
dtstampDate  = (array) ( &quot;timestamp&quot; =&gt; (int) timestamp [, &quot;tz&quot; => offset ])
dtstampDate  = (string) (string) date/datetime string<span class="ref">*</span>
offset       = (int) (+/-)HHmm[ss], local date + UTC offset =&gt; <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME
xparams<span class="ref">2</span>     = array( *[ (string) xparamkey =&gt; (string) xparamvalue ] )
<br>date/datetime string<span class="ref">*</span> recommended formats
    &quot;20110625&quot;,            &quot;2011-06-25&quot;,          &quot;2011/06/26&quot;
    &quot;20110625051015&quot;,      &quot;20110625 051015&quot;
    &quot;20110625T051015&quot;,     &quot;20110625t051015&quot;
    &quot;2011-06-25 05:10:15&quot;, &quot;2011-06-25T05:10:15&quot;, &quot;2011-06-25t05:10:15&quot;
    &quot;2011/06/25 05:10:15&quot;, &quot;2011/06/25T05:10:15&quot;, &quot;2011/06/25t05:10:15&quot;
    trailing characters (digits), if exists, will be interpreted as offset
    other string formats, acceptable by strtotime function, may (would) work
    <span class="ref">(notice <a href="#date_restriction">date restriction</a>)</span></p>
<p class="label">Example 1</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
$vtodo = &amp; $vcalendar->newComponent( &quot;vtodo&quot; );
.. .
$vtodo->setProperty( &quot;dstamp&quot;
                    , 2006, 8, 11, 7, 30, 1 );
  <span class="ref">// 11 august 2006 07.30.01 UTC</span></p>
<p class="label">Example 2</p>
<p class="example">$date = array(&quot;year&quot; =&gt; 2006, &quot;month&quot; =&gt; 10, &quot;day&quot; =&gt; 10,
              &quot;hour&quot; =&gt; 10, &quot;min&quot; =&gt; 0, &quot;sec&quot; =&gt; 0, &quot;tz&quot; =&gt; &quot;+0200&quot;);
  // <span class="ref">local date + UTC offset =&gt; <a class="ref" href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME</span>
$vtodo->setProperty( &quot;dtstamp&quot;, $date );
.. .</p>
<br>
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<a name="DTSTART"></a><h3>3.2.17 DTSTART</h3>
<p>
This property specifies when the <strong>calendar</strong> component begins. 
The property is OPTIONAL and MUST NOT occur more than once in <a href="#VEVENT">VEVENT</a>, 
<a href="#VTODO">VTODO</a>, <a href="#VJOURNAL">VJOURNAL</a> and <a href="#VFREEBUSY">VFREEBUSY</a> components. 
The property is REQUIRED, but MUST NOT occur more than once in <a href="#VTIMEZONE">STANDARD</a> and <a href="#VTIMEZONE">DAYLIGHT</a> components.
</p>
<p>The default value type for DTSTART is DATE-TIME, can be set to a DATE value type.</p>
<p>
For an &quot;all-day event&quot; and using timeless dates, example (2007-12-01)<br>
DTSTART;VALUE=DATE:20071201<br>
DTEND;VALUE=DATE:20071202. // <span class="ref">opt., in effect midnight of the day <u>before</u> the date!!</span>
</p>
<h5>Create DTSTART</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createDtstart()</p>
<p class="label">Example</p>
<p class="example">$component->createDtstart();</p>
<h5>Delete DTSTART</h5>
<p>Remove DTSTART from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;DTSTART&quot; )</p>
<p class="label">Example</p>
<p class="example">$vevent->deleteProperty( &quot;DTSTART&quot; );</p>
<h5>Get DTSTART</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;DTSTART&quot; )</p>
<p class="comment">output = dtstartDate<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;DTSTART&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; dtstartDate<span class="ref">1</span>
              , &quot;params&quot; =&gt; params<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$dtstart = $vevent->getProperty( &quot;dtstart&quot; );</p>
<h5>Set DTSTART</h5>
<p>
Insert property value. If DATE value type is expected, &quot;VALUE&quot; = &quot;DATE&quot; 
<b>must</b> be set (in params<span class="ref">2</span>) otherwise DATE-TIME (default) value type is set.
</p>
<p>
If no timezone parameter (tz or tzidparam below) is set (i.e.local time) and config <a href="#dTZID">TZID</a> is set,
date-time values will be set WITH timezone from config. 
Notice, use function <a href="#transformDateTime">transformDateTime</a> to change a datetime from one time zone to another.
</p>
<p>Parameters, if any, will be ordered as prescribed in rcf2445.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;dtstart&quot;, dtstartDate [, params ] )</p>
<p class="comment">dtstartDate<span class="ref">1</span>  = (array) ( &quot;year&quot;  =&gt; (int) year
                        , &quot;month&quot; =&gt; (int) month
                        , &quot;day&quot;   =&gt; (int) day
                       [, &quot;hour&quot;  =&gt; (int) hour
                        , &quot;min&quot;   =&gt; (int) min
                        , &quot;sec&quot;   =&gt; (int) sec
                       [, &quot;tz&quot;    =&gt; tz ]] )
dtstartDate   = (int) year
              , (int) month
              , (int) day
             [, (int) hour
              , (int) min
              , (int) sec
             [, tz ]]
dtstartDate   = (array) ( (int) year
                        , (int) month
                        , (int) day
                       [, (int) hour
                        , (int) min
                        , (int) sec
                       [, tz ]] )
dtstartDate   = (array) (&quot;timestamp&quot; =&gt; (int) timestamp [, &quot;tz&quot; =&gt; tz])
dtstartDate   = (string) date/datetime string<span class="ref">*</span>
dtstartDate : Within the "VFREEBUSY" <strong>calendar</strong> component,
              the dtstartDate MUST be specified in the <a href="#DATE_WITH_UTC_TIME">UTC</a> time format.
tz            = (string) &lt;timezone identifier&gt; / offset
                (timezone will be used as tzidparam (below), if tzidparam not set)
offset        = (int) (+/-)HHmm[ss], local date + UTC offset =&gt; <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME
params<span class="ref">2</span>       = (array) ([ tzidparam/datetimeparam/dateparam ] *[, xparams])
tzidparam     = &quot;TZID&quot; =&gt; (string) &lt;timezone identifier&gt;
                // <span class="ref">output as local date-time with timezone identifier</span>
                // <span class="ref">if tzidparam=&quot;GMT&quot;/&quot;UTC&quot; then</span>
                // <span class="ref">output date-time are suffixed by 'Z'</span>
datetimeparam = &quot;VALUE&quot; =&gt; &quot;DATE-TIME&quot; // <span class="ref">default, output as date-time</span>
dateparam     = &quot;VALUE&quot; =&gt; &quot;DATE&quot; // <span class="ref">output as DATE, ex. all-day event</span>
xparams       = (string) xparamkey =&gt; (string) xparamvalue
<br>date/datetime string<span class="ref">*</span> recommended formats
    &quot;20110625&quot;,            &quot;2011-06-25&quot;,          &quot;2011/06/26&quot;
    &quot;20110625051015&quot;,      &quot;20110625 051015&quot;
    &quot;20110625T051015&quot;,     &quot;20110625t051015&quot;
    &quot;2011-06-25 05:10:15&quot;, &quot;2011-06-25T05:10:15&quot;, &quot;2011-06-25t05:10:15&quot;
    &quot;2011/06/25 05:10:15&quot;, &quot;2011/06/25T05:10:15&quot;, &quot;2011/06/25t05:10:15&quot;
    trailing characters (digits), if exists, will be interpreted as offset/timezone
    other string formats, acceptable by strtotime function, may (would) work
    <span class="ref">(notice <a href="#date_restriction">date restriction</a>)</span></p>
<p class="label">Example 1</p>
<p class="example">$vevent->setProperty( &quot;dstart&quot;
                    , 2006, 8, 11, 7, 30, 1 );
  <span class="comment">// 11 august 2006 07.30.01 local date</span></p>
<p class="label">Example 2</p>
<p class="example">$vevent->setProperty( &quot;dstart&quot;
                    , 2006, 8, 11, 16, 30, 0, &quot;-040000&quot; );
  <span class="comment">// 11 august 2006 16.30.00 -040000,
  // local date + UTC offset =&gt; <a class="ref" href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME</span></p>
<p class="label">Example 3</p>
<p class="example">$vevent->setProperty( &quot;dtstart&quot;
                    , array( &quot;year&quot; =&gt;, 2006, &quot;month&quot; =&gt; 8, &quot;day&quot;=&gt; 11 )
                    , array( &quot;VALUE&quot; =&gt; &quot;DATE&quot; ));
  <span class="comment">// start of an all-day event, or a period of (entire) days</span></p>
<br>
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<a name="DUE"></a><h3>3.2.18 DUE</h3>
<p>
This property defines the date and time when a <a href="#VTODO">VTODO</a> is expected to be completed
and is OPTIONAL and MUST NOT occur more than once and only if DURATION NOT occurs.
</p>
<p>The default value type for DUE is DATE-TIME, can be set to a DATE value type.</p>
<h5>Create DUE</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createDue()</p>
<p class="label">Example</p>
<p class="example">$component->createDue();</p>
<h5>Delete DUE</h5>
<p>Remove DUE from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;DUE&quot; )</p>
<p class="label">Example</p>
<p class="example">$vtodo->deleteProperty( &quot;DUE&quot; );</p>
<h5>Get DUE</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;DUE&quot; )</p>
<p class="comment">output = dueDate<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;DUE&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; dueDate<span class="ref">1</span>
              , &quot;params&quot; =&gt; params<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$due = $vtodo->getProperty( &quot;due&quot; );</p>
<h5>Set DUE</h5>
<p>
Insert property value. If DATE value type is expected, &quot;VALUE&quot; = &quot;DATE&quot; <b>must</b> be set
(in params<span class="ref">2</span>) otherwise DATE-TIME (default) value type is set.
</p>
<p>
If no timezone parameter (tz or tzidparam below) is set (i.e.local time) and config <a href="#dTZID">TZID</a> is set,
date-time values will be set WITH timezone from config. 
Notice, use function <a href="#transformDateTime">transformDateTime</a> to change a datetime from one time zone to another.
</p>
<p>Parameters, if any, will be ordered as prescribed in rcf2445.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;due&quot;, dueDate [, params ] )</p>
<p class="comment">dueDate<span class="ref">1</span>      = (array) ( &quot;year&quot;   =&gt; (int) year
                         , &quot;month&quot; =&gt; (int) month
                         , &quot;day&quot;   =&gt; (int) day
                        [, &quot;hour&quot;  =&gt; (int) hour
                         , &quot;min&quot;   =&gt; (int) min
                         , &quot;sec&quot;   =&gt; (int) sec
                        [, &quot;tz&quot;    =&gt; tz ]] )
dueDate       = (int) year
              , (int) month
              , (int) day
             [, (int) hour
              , (int) min
              , (int) sec
             [,  tz ]]
dueDate       = (array) ( (int) year
                        , (int) month
                        , (int) day
                       [, (int) hour
                        , (int) min
                        , (int) sec
                       [, tz ]] )
dueDate       = (array) ( &quot;timestamp&quot; =&gt; (int) timestamp [, &quot;tz&quot; =&gt; tz])
dueDate       = (string) date/datetime string<span class="ref">*</span>
tz            = (string) &lt;timezone identifier&gt; / offset
                (timezone will be used as tzidparam (below), if tzidparam not set)
offset        = (int) (+/-)HHmm[ss], local date + UTC offset =&gt; <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME
params<span class="ref">2</span>       = (array) ([ tzidparam/datetimeparam/dateparam ] *[, xparams])
tzidparam     = &quot;TZID&quot; =&gt; (string) &lt;timezone identifier&gt;
                // <span class="ref">output as local date-time with timezone identifier</span>
                // <span class="ref">if tzidparam=&quot;GMT&quot;/&quot;UTC&quot; then</span>
                // <span class="ref">output date-time are suffixed by 'Z'</span>
datetimeparam = &quot;VALUE&quot; =&gt; &quot;DATE-TIME&quot; // <span class="ref">default, output as date-time</span>
dateparam     = &quot;VALUE&quot; =&gt; &quot;DATE&quot; // <span class="ref">output as DATE, &quot;during the day&quot;</span>
xparams       = (string) xparamkey =&gt; (string) xparamvalue
<br>date/datetime string<span class="ref">*</span> recommended formats
    &quot;20110625&quot;,            &quot;2011-06-25&quot;,          &quot;2011/06/26&quot;
    &quot;20110625051015&quot;,      &quot;20110625 051015&quot;
    &quot;20110625T051015&quot;,     &quot;20110625t051015&quot;
    &quot;2011-06-25 05:10:15&quot;, &quot;2011-06-25T05:10:15&quot;, &quot;2011-06-25t05:10:15&quot;
    &quot;2011/06/25 05:10:15&quot;, &quot;2011/06/25T05:10:15&quot;, &quot;2011/06/25t05:10:15&quot;
    trailing characters (digits), if exists, will be interpreted as offset/timezone
    other string formats, acceptable by strtotime function, may (would) work
    <span class="ref">(notice <a href="#date_restriction">date restriction</a>)</span></p>
<p class="label">Example 1</p>
<p class="example">$vtodo->setProperty( &quot;due&quot;
                   , 2006, 8, 11, 18, 0, 0 );
  <span class="comment">// 11 august 2005 18.00.00 local date</span></p>
<p class="label">Example 2</p>
<p class="example">$vtodo->setProperty( &quot;due&quot;
                   , 2006, 8, 11, 16, 30, 0, &quot;-040000&quot; );
  <span class="comment">// 11 august 2006 16.30.00 -040000
  // local date + UTC offset sets <a class="ref" href="#DATE_WITH_UTC_TIME">UTC</a>DATE-TIME</span></p>
<p class="label">Example 3</p>
<p class="example">$vtodo->setProperty( &quot;due&quot;
                    , array( &quot;year&quot; =&gt;, 2006, &quot;month&quot; =&gt; 8, &quot;day&quot;=&gt; 11 )
                    , array( &quot;VALUE&quot; =&gt; &quot;DATE&quot; ));
  <span class="comment">// due &quot;during the day&quot;</span></p>
<br>
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<a name="DURATION"></a><h3>3.2.19 DURATION</h3>
<p>The property specifies a positive duration of time.</p>
<dl>
<dt>In a <a href="#VEVENT">VEVENT</a>
<dd>it is OPTIONAL and MUST NOT occur more than once and MUST NOT occur in pair with DTEND. If one occurs, so MUST NOT the other.<br>
<dt>In a <a href="#VTODO">VTODO</a>
<dd>it is OPTIONAL and MUST NOT occur more than once and MUST NOT occur in pair with DUE. If one occurs, so MUST NOT the other.<br>
<dt>In a <a href="#VFREEBUSY">VFREEBUSY</a>
<dd>it is OPTIONAL and MUST NOT occur more than once.<br>
<dt>In a <a href="#VALARM">VALARM</a>
<dd>it is OPTIONAL and MUST NOT occur more than once and MUST occur in pair with TRIGGER. If one occurs, so MUST  the other.
</dl>
<h5>Create DURATION</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createDuration()</p>
<p class="label">Example</p>
<p class="example">$component->createDuration();</p>
<h5>Delete DURATION</h5>
<p>Remove DURATION from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;DURATION&quot; )</p>
<p class="label">Example</p>
<p class="example">$valarm->deleteProperty( &quot;DURATION&quot; );</p>
<h5>Get DURATION</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;DURATION&quot; )</p>
<p class="comment">output = duration<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;DURATION&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; duration<span class="ref">1</span>
              , &quot;params&quot; =&gt; xparams<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$duration = $vtodo->getProperty( &quot;duration&quot; );</p>
<p class="label">option</p>
<p>
If a 4th argument is used and set to TRUE, returned output is in a DATE-TIME
 output format (like <a href="#DTEND">DTEND</a> / <a href="#DUE">DUE</a>), based on
<a href="#DTSTART">DTSTART</a> value with the added DURATION value.
</p>
<h5>Set DURATION</h5>
<p>Insert property value.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;duration&quot;, duration [, xparams ] )</p>
<p class="comment">
duration<span class="ref">1</span>  = (array) ( &quot;week&quot; =&gt; (int) week )
duration<span class="ref">1</span>  = array ( &quot;day&quot;   =&gt; (int) day )
                  [, &quot;hour&quot;  =&gt; (int) hour
                   , &quot;min&quot;   =&gt; (int) min
                   , &quot;sec&quot;   =&gt; (int) sec ])
duration   = (array) ( &quot;sec&quot; =&gt; (int) sec )
duration   = (array) ( (int) week/false
                    [, (int) day/false
                    [, (int) hour
                     , (int) min
                     , (int) sec ]] )
duration   = (int) week/false
          [, (int) day/false
          [, (int) hour
           , (int) min
           , (int) sec ]]
duration   = (string) dur-value = [&quot;+&quot;] &quot;P&quot; (dur-date/dur-time/dur-week)
dur-date   = dur-day [dur-time]
dur-time   = &quot;T&quot; (dur-hour / dur-minute / dur-second)
dur-week   = 1*DIGIT &quot;W&quot;
dur-hour   = 1*DIGIT &quot;H&quot; [dur-minute]
dur-minute = 1*DIGIT &quot;M&quot; [dur-second]
dur-second = 1*DIGIT &quot;S&quot;
dur-day    = 1*DIGIT &quot;D&quot;
xparams<span class="ref">2</span>    = (array) ( *[ (string) xparamkey =&gt; (string) xparamvalue ] )</p>
<p class="label">Example 1</p>
<p>One day duration.</p>
<p class="example">$vtodo->setProperty &quot;duration&quot;
                   , array( &quot;day&quot; =&gt; 1 )); </p>
<p class="label">Example 2</p>
<p>Four hours duration.</p>
<p class="example">$vtodo->setProperty( &quot;duration&quot;
                   , &quot;PT4H&quot; );</p>
<br>
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<a name="EXDATE"></a><h3>3.2.20 EXDATE</h3>
<p>
This property defines the list of date/time exceptions for a recurring <strong>calendar</strong> component and is OPTIONAL 
and MAY occur more than once in <a href="#VEVENT">VEVENT</a>, <a href="#VTODO">VTODO</a>, <a href="#VJOURNAL">VJOURNAL</a> components.
<p>
<p>The default value type for EXDATE is DATE-TIME, can be set to a DATE value type.</p>
<h5>Create EXDATE</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createExdate()</p>
<p class="label">Example</p>
<p class="example">$component->createExdate();</p>
<h5>Delete EXDATE</h5>
<p>Remove EXDATE from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;EXDATE&quot; )</p>
<p class="label">Example 1</p>
<p class="example">$vtodo->deleteProperty( &quot;EXDATE&quot; );</p>
<p class="label">Example 2</p>
<P>Delete EXDATE property no 2.</p>
<p class="example">$vjournal->deleteProperty( &quot;EXDATE&quot;, 2 );</p>
<p class="label">Example 3</p>
<p>Deleting all EXDATE properties.</p>
<p class="example">while( $vjournal->deleteProperty( &quot;EXDATE&quot; ))
  continue;</p>
<h5>Get EXDATE</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;EXDATE&quot; )<p>
<p class="comment">output = exdates<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;exdate&quot;, propOrderNo/FALSE, TRUE )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; exdates<span class="ref">1</span>
              , &quot;params&quot; =&gt; xparams<span class="ref">2</span> )</p>
<p class="label">Format 3</p>
<p class="format">getProperty( &quot;EXDATE&quot;, propOrderNo )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">Get propOrderNo EXDATE</p>
<p class="label">Example</p>
<p class="example">$exdate = $vtodo->getProperty( &quot;exdate&quot; );</p>
<h5>Set EXDATE</h5>
<p>Insert property value.</p>
<p>
If &quot;TZID&quot; is set in params, ex. &quot;TZID&quot; = &quot;CET&quot;,
all timezone or offset in dates are ignored and DATE-TIME value type is set.<br>
If DATE value type is set in params (&quot;VALUE&quot; = &quot;DATE&quot;), all timezone or offset in dates are ignored.<br>
If no &quot;VALUE&quot; parameter in params, DATE-TIME (default) value type is set.<br>
If empty params and offset in 1st date, all remaining dates are set to UTC.<br>
If no &quot;TZID&quot; is set in params and timezone in 1st date, all remaining dates are within this timezone and param &quot;TZID&quot; is set.<br>
If none of the above rules are applicable, DATE-TIME and local date is set default.<br>
Notice, use function <a href="#transformDateTime">transformDateTime</a> to change a datetime from one time zone to another.
</p>
<p>Parameters, if any, will be ordered as prescribed in rcf2445.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;exdate&quot;, exdates [, xparams [, propOrderNo ]] )</p>
<p class="comment">exdates<span class="ref">1</span>      = (array) ( date *[, date ] )
date          = array( (int) year
                     , (int) month
                     , (int) day
                    [, (int) hour
                     , (int) min
                     , (int) sec
                    [, tz ]] )
date<span class="ref">1</span>         = (array) ( &quot;year&quot;  =&gt; (int) year
                        , &quot;month&quot; =&gt; (int) month
                        , &quot;day&quot;   =&gt; (int) day
                       [, &quot;hour&quot;  =&gt; (int) hour
                        , &quot;min&quot;   =&gt; (int) min
                        , &quot;sec&quot;   =&gt; (int) sec
                       [, &quot;tz&quot;    =&gt; tz ]] )
date          = (array) ( &quot;timestamp&quot; =&gt; (int) timestamp [, &quot;tz&quot; =&gt; tz])
date          = (string) date/datetime string<span class="ref">*</span>
tz            = (string) &lt;timezone identifier&gt; / offset
                (timezone will be used as tzidparam (below), if tzidparam not set)
offset        = (int) (+/-)HHmm[ss], local date + UTC offset =&gt; <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME
params<span class="ref">2</span>       = (array) ([(datetimeparam/dateparam)&nbsp;/ tzidparam] [,xparams])
datetimeparam = &quot;VALUE&quot; =&gt; &quot;DATE-TIME&quot; // <span class="ref">default, output as date-time</span>
dateparam     = &quot;VALUE&quot; =&gt; &quot;DATE&quot; // <span class="ref">output as DATE</span>
tzidparam     = &quot;TZID&quot; =&gt; (string) &lt;timezone identifier&gt;
xparams       = *[ (string) xparamkey =&gt; (string) xparamvalue ]
propOrderNo   = (int) ordernumber, 1=1st, 2=2nd etc
<br>date/datetime string<span class="ref">*</span> recommended formats
    &quot;20110625&quot;,            &quot;2011-06-25&quot;,          &quot;2011/06/26&quot;
    &quot;20110625051015&quot;,      &quot;20110625 051015&quot;
    &quot;20110625T051015&quot;,     &quot;20110625t051015&quot;
    &quot;2011-06-25 05:10:15&quot;, &quot;2011-06-25T05:10:15&quot;, &quot;2011-06-25t05:10:15&quot;
    &quot;2011/06/25 05:10:15&quot;, &quot;2011/06/25T05:10:15&quot;, &quot;2011/06/25t05:10:15&quot;
    trailing characters (digits), if exists, will be interpreted as offset/timezone
    other string formats, acceptable by strtotime function, may (would) work
    <span class="ref">(notice <a href="#date_restriction">date restriction</a>)</span></p>
<p class="label">Example 1</p>
<p class="example">$vevent->setProperty( &quot;exdate&quot;
                    , array( array( 2006, 8, 14, 16, 0, 0 ));
  <span class="ref">// >exclude 2006-08-14 16.00.00 (local date) from recurrence pattern</span></p>
<p class="label">Example 2</p>
<p class="example">$vevent->setProperty( &quot;exdate&quot;
                    , array( array(&quot;year&quot; =&gt;,2006,&quot;month&quot; =&gt; 8,&quot;day&quot;=&gt; 11))
                    , array( &quot;VALUE&quot; =&gt; &quot;DATE&quot; ));
  <span class="ref">// exclude 2006-08-11 from recurrence pattern;</span></p>
<br>
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<a name="EXRULE"></a><h3>3.2.21 EXRULE</h3>
<p>
This property defines a rule or repeating pattern for an exception to a recurrence set and is OPTIONAL 
and MAY occur more than once in <a href="#VEVENT">VEVENT</a>, <a href="#VTODO">VTODO</a>, <a href="#VJOURNAL">VJOURNAL</a> components.
</p>
<p>EXRULE is deprecated in rfc5545!</p>
<h5>Create EXRULE</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createExrule()</p>
<p class="label">Example</p>
<p class="example">$component->createExrule();</p>
<h5>Delete EXRULE</h5>
<p>Remove EXRULE from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;EXRULE&quot; )</p>
<p class="label">Example 1</p>
<p class="example">$vtodo->deleteProperty( &quot;EXRULE&quot; );</p>
<p class="label">Example 2</p>
<p>Delete EXRULE property no 2.</p>
<p class="example">$vjournal->deleteProperty( &quot;EXRULE&quot;, 2 );</p>
<p class="label">Example 3</p>
<p>Deleting all EXRULE properties.</p>
<p class="example">while( $vjournal->deleteProperty( &quot;EXRULE&quot; ))
  continue;</p>
<h5>Get EXRULE</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;EXRULE&quot; )</p>
<p class="comment">output = recur<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;exrule&quot;, propOrderNo/FALSE, TRUE )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; recur<span class="ref">1</span>
              , &quot;params&quot; =&gt; xparams<span class="ref">2</span> )</p>
<p class="label">Format 3</p>
<p class="format">getProperty( &quot;EXRULE&quot;, propOrderNo )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">Get propOrderNo EXRULE</p>
<p class="label">Example</p>
<p class="example">$exrule = $vtodo->getProperty( &quot;exrule&quot; );</p>
<h5>Set EXRULE</h5>
<p>
Insert property value. 
Notice, use function <a href="#transformDateTime">transformDateTime</a>to change a local datetime to a UTC datetime.
</p>
<p>Parameters, will be ordered as prescribed in rcf2445.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;exrule&quot;, recur [, xparams [, propOrderNo ]] )</p>
See rules in detail in <a href="http://kigkonsult.se/downloads/dl.php?f=rfc2445" title="RFC2445" target="_blank">RFC2445</a> - Internet Calendaring and Scheduling Core Object Specification (iCalendar).
<p class="comment">recur<span class="ref">1</span>      = (array) ( "FREQ" =&gt; freq
     // <span class="ref">either UNTIL or COUNT may appear in a &quot;recur&quot;,
        but UNTIL and COUNT MUST NOT occur in the same &quot;recur&quot;</span>
                  [, &quot;UNTIL&quot; &quot;=&gt;&quot; >enddate ]
                  [, &quot;COUNT&quot; &quot;=&gt;&quot; 1*DIGIT ]
     // <span class="ref">the rest of these keywords are optional,
        but MUST NOT occur more than once</span>
                  [, &quot;INTERVAL&quot;   &quot;=&gt;&quot; 1*DIGIT ]
                  [, &quot;BYSECOND&quot;   &quot;=&gt;&quot; byseclist ]
                  [, &quot;BYMINUTE&quot;   &quot;=&gt;&quot; byminlist ]
                  [, &quot;BYHOUR&quot;     &quot;=&gt;&quot; byhrlist ]
                  [, &quot;BYDAY&quot;      &quot;=&gt;&quot; bywdaylist ]
                  [, &quot;BYMONTHDAY&quot; &quot;=&gt;&quot; bymodaylist ]
                  [, &quot;BYYEARDAY&quot;  &quot;=&gt;&quot; byyrdaylist ]
                  [, &quot;BYWEEKNO&quot;   &quot;=&gt;&quot; bywknolist ]
                  [, &quot;BYMONTH&quot;    &quot;=&gt;&quot; bymolist ]
                  [, &quot;BYSETPOS&quot;   &quot;=&gt;&quot; bysplist ]
                  [, &quot;WKST&quot;       &quot;=&gt;&quot; weekday ]
                  [, x-name       &quot;=&gt;&quot; (string) text ] )
freq        = &quot;SECONDLY&quot; /
              &quot;MINUTELY&quot; /
              &quot;HOURLY&quot;   /
              &quot;DAILY&quot;    /
              &quot;WEEKLY&quot;   /
              &quot;MONTHLY&quot;  /
              &quot;YEARLY&quot;
enddate     = date (a DATE value or a <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME value)
date        = (array) ( &quot;year&quot;  =&gt; (int) year
                      , &quot;month&quot; =&gt; (int) month
                      , &quot;day&quot;   =&gt; (int) day
                     [, &quot;hour&quot;  =&gt; (int) hour
                      , &quot;min&quot;   =&gt; (int) min
                      , &quot;sec&quot;   =&gt; (int) sec ])
date        = (array) ( &quot;timestamp&quot; =&gt; (int) timestamp )
date        = (string) date/datetime string<span class="ref">*</span>
byseclist   = seconds
byseclist   = (array) (seconds *(, seconds ))
seconds     = 1DIGIT / 2DIGIT ;0 to 59
byminlist   = minutes
byminlist   = (array) ( minutes *(, minutes ))
minutes     = 1DIGIT / 2DIGIT ;0 to 59
byhrlist    = hour
byhrlist    = (array) ( hour *(, hour ))
hour        = 1DIGIT / 2DIGIT ;0 to 23
bywdaylist  = weekdaynum
bywdaylist  = (array) ( weekdaynum *("," weekdaynum ))
weekdaynum  = (array) ( [([plus] ordwk / minus ordwk)], &quot;DAY&quot; =&gt; weekday )
plus        = &quot;+&quot;
minus       = &quot;-&quot;
ordwk       = 1DIGIT / 2DIGIT ;1 to 53
weekday     = &quot;SU&quot; / &quot;MO&quot; / &quot;TU&quot; / &quot;WE&quot; / &quot;TH&quot; / &quot;FR&quot; / &quot;SA&quot;
                ; Corresponding to
                ; SUNDAY, MONDAY, TUESDAY, WEDNESDAY, THURSDAY,
                ; FRIDAY, SATURDAY and SUNDAY days of the week.
bymodaylist = monthdaynum
bymodaylist = (array) ( monthdaynum *(, monthdaynum ))
monthdaynum = ( [plus] ordmoday ) / ( minus ordmoday )
ordmoday    = 1DIGIT / 2DIGIT ;1 to 31
byyrdaylist = yeardaynum
byyrdaylist = (array) ( yeardaynum *(, yeardaynum ))
yeardaynum  = ( [plus] ordyrday ) / ( minus ordyrday )
ordyrday    = 1DIGIT / 2DIGIT / 3DIGIT ;1 to 366
bywknolist  = weeknum
bywknolist  = (array) ( weeknum *(, weeknum ))
weeknum     = ( [plus] ordwk ) / ( minus ordwk )
bymolist    = monthnum
bymolist    = (array) ( monthnum *(, monthnum ))
monthnum    = 1DIGIT / 2DIGIT ;1 to 12
bysplist    = setposday
bysplist    = (array) ( setposday *(, setposday ))
setposday   = yeardaynum
xparams<span class="ref">2</span>    = (array) ( *[ (string) xparamkey =&gt; (string) xparamvalue ] )
propOrderNo = (int) ordernumber, 1=1st, 2=2nd etc
<br>date/datetime string<span class="ref">*</span> recommended formats
    &quot;20110625&quot;,            &quot;2011-06-25&quot;,          &quot;2011/06/26&quot;
    &quot;20110625051015&quot;,      &quot;20110625 051015&quot;
    &quot;20110625T051015&quot;,     &quot;20110625t051015&quot;
    &quot;2011-06-25 05:10:15&quot;, &quot;2011-06-25T05:10:15&quot;, &quot;2011-06-25t05:10:15&quot;
    &quot;2011/06/25 05:10:15&quot;, &quot;2011/06/25T05:10:15&quot;, &quot;2011/06/25t05:10:15&quot;
    other string formats, acceptable by strtotime function, may (would) work
    <span class="ref">(notice <a href="#date_restriction">date restriction</a>)</span></p>
<p class="label">Example</p>
<p class="example">$vevent->setProperty(&nbsp;&quot;Exrule&quot;
             ,&nbsp;array( &quot;FREQ&quot;       =&gt; &quot;MONTHLY&quot;
                    , &quot;UNTIL&quot;      =&gt; &quot;20060831&quot;
   // <span class="ref">DATE / DATE-TIME in <a class="ref" href="#DATE_WITH_UTC_TIME">UTC</a> format; string/array, see <a href="#CREATED">CREATED</a> format</span>
                    , &quot;INTERVAL&quot;   =&gt; 2
                    , &quot;WKST&quot;       =&gt; &quot;SU&quot;
                    , &quot;BYSECOND&quot;   =&gt; 2
                    , &quot;BYMINUTE&quot;   =&gt; array( 2, -4, 6 ) // (*)
                    , &quot;BYHOUR&quot;     =&gt; array( 2, 4, -6 ) // (*)
                    , &quot;BYMONTHDAY&quot; =&gt; -2                // (*)
                    , &quot;BYYEARDAY&quot;  =&gt; 2                 // (*)
                    , &quot;BYWEEKNO&quot;   =&gt; array( 2, -4, 6 ) // (*)
                    , &quot;BYMONTH&quot;    =&gt; 2                 // (*)
                    , &quot;BYSETPOS&quot;   =&gt; array( 2, -4, 6 ) // (*)
                    , &quot;BYday&quot;      =&gt; array( array(-2, &quot;DAY&quot; =&gt; &quot;WE&quot; )
                                           , array( 3, &quot;DAY&quot; =&gt; &quot;TH&quot;)
                                           , array( 5, &quot;DAY&quot; =&gt; &quot;FR&quot;)
                                           , array(    &quot;DAY&quot; =&gt; &quot;MO&quot;))
                                                        // (**)
                    , &quot;X-NAME&quot;     =&gt; &quot;x-value&quot; )
            , array( &quot;xparamkey&quot;   =&gt; &quot;xparamValue&quot; ));

$vtodo->setProperty( >&quot;exrule&quot;
            , array( &quot;FREQ&quot;        =&gt; &quot;WEEKLY&quot;
                   , &quot;COUNT&quot;       =&gt; 2
                   , &quot;INTERVAL&quot;    =&gt; 2
                   , &quot;WKST&quot;        =&gt; &quot;SU&quot;
                   , &quot;BYSECOND&quot;    =&gt; array( -2, 4, 6 ) // (*)
                   , &quot;BYMINUTE&quot;    =&gt; -2                // (*)
                   , &quot;BYHOUR&quot;      =&gt; 2                 // (*)
                   , &quot;BYMONTHDAY&quot;  =&gt; array( 2, -4, 6 ) // (*)
                   , &quot;BYYEARDAY&quot;   =&gt; array( -2, 4, 6 ) // (*)
                   , &quot;BYWEEKNO&quot;    =&gt; -2                // (*)
                   , &quot;BYMONTH&quot;     =&gt; array( 2, 4, -6 ) // (*)
                   , &quot;BYSETPOS&quot;    =&gt; -2                // (*)
                   , &quot;BYday&quot;       =&gt; array( 5, &quot;DAY&quot; =&gt; &quot;WE&quot; )
                                                        // (**)
                   , &quot;X-NAME&quot;      =&gt; &quot;x-value&quot;  )
            , array( &quot;xparamkey&quot;   =&gt; &quot;xparamValue&quot; ));
  //<span class="ref">(*)  single value/array of values</span>
  //<span class="ref">(**) single value array /array of arrays</span>
</p>
<br>
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<a name="FREEBUSY_PROP"></a><h3>3.2.22 FREEBUSY</h3>
<p>
The property defines one or more free or busy time intervals in a <a href="#VFREEBUSY">VFREEBUSY</a> <strong>calendar</strong> component.
<p>
<p>The value type for FREEBUSY is PERIOD. A PERIOD is a DATE-TIME/DATE-TIME or a DATE-TIME/duration.</p>
<h5>Create FREEBUSY</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createFreebusy()</p>
<p class="label">Example</p>
<p class="example">$component->createfreebusy();</p>
<h5>Delete FREEBUSY</h5>
<p>Remove FREEBUSY from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;FREEBUSY&quot; )</p>
<p class="label">Example 1</p>
<p>Delete (single/first) FREEBUSY property</p>
<p class="example">$vfreebusy->deleteProperty( &quot;FREEBUSY&quot; );</p>
<p class="label">Example 2</p>
<p>Delete FREEBUSY property no 2.</p>
<p class="example">$vfreebusy->deleteProperty( &quot;FREEBUSY&quot;, 2 );</p>
<p class="label">Example 3</p>
<p>Deleting all FREEBUSY properties.</p>
<p class="example">while( $vfreebusy->deleteProperty( &quot;FREEBUSY&quot; ))
  continue;</p>
<h5>Get FREEBUSY</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;FREEBUSY&quot; )</p>
<p class="comment">output = array( &quot;fbtyp&quot; =&gt; freebusytype<span class="ref">1</span> , periods<span class="ref">2</span> )</p>
<p class="label">Format 3</p>
<p class="format">getProperty( &quot;FREEBUSY&quot;, propOrderNo/FALSE , TRUE )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">output = array( &quot;value&quot; =&gt; array(&quot;fbtype&quot; =&gt; freebusytype<span class="ref">1</span> ,periods<span class="ref">2</span>)
              , &quot;params&quot; =&gt; xparams<span class="ref"> 3</span> )</p>
<p class="label">Format 3</p>
<p class="format">getProperty( &quot;FREEBUSY&quot;, propOrderNo )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">Get propOrderNo FREEBUSY</p>
<p class="label">Example</p>
<p class="example">$freebusy = $vfreebusy->getProperty( &quot;FREEBUSY&quot; );</p>
<h5>Set FREEBUSY</h5>
Insert property value. A FREEBUSY input date is always a <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME.
<p class="label">Format</p>
<p class="format">setProperty( &quot;freebusy&quot;,freebusytype,fbperiods [,xparams [,propOrderNo ]] )</p>
<p class="comment">freebusytype<span class="ref">1</span>     = one of &quot;FREE&quot;
                        / &quot;BUSY&quot; <b>Default</b>
                        / &quot;BUSY-UNAVAILABLE&quot;
                        / &quot;BUSY-TENTATIVE&quot;
                        /  x-name
fbperiods         = (array) ( periods<span class="ref">2</span> )&nbsp;
periods<span class="ref">2</span>          = (array) ( startdate, enddate/duration ) /
                    (array) ( *[, (array) ( startdate, enddate/duration )] )
startdate/enddate = (array) ( (int) year
                            , (int) month
                            , (int) day
                            , (int) hour
                            , (int) min
                            , (int) sec )
startdate/enddate = (array) ( &quot;year&quot;  =&gt; (int) year
                            , &quot;month&quot; =&gt; (int) month
                            , &quot;day&quot;   =&gt; (int) day
                            , &quot;hour&quot;  =&gt; (int) hour
                            , &quot;min&quot;   =&gt; (int) min
                            , &quot;sec&quot;   =&gt; (int) sec ) // <span class="ref">output format</span>
startdate/enddate = (array) ( &quot;timestamp&quot; =&gt; (int) timestamp )
startdate/enddate = (string) datetime string<span class="ref">*</span>
startdate/enddate : MUST be an <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME
duration          = (array) ( (int) week / FALSE
                           [, (int) day / FALSE
                            , (int) hour
                            , (int) min
                            , (int) sec] )
duration          = (array) ( &quot;week&quot; =&gt; (int) week / FALSE
                           [, &quot;day&quot;  =&gt; (int) day / FALSE
                           [, &quot;hour&quot; =&gt; (int) hour
                            , &quot;min&quot;  =&gt; (int) min
                            , &quot;sec&quot;  =&gt; (int) sec ]] ); // <span class="ref">output format</span>
duration          = (array) ( &quot;sec&quot;  =&gt; (int) sec )
duration          = (string) dur-value
                        = ([&quot;+&quot;]/&quot;-&quot;) &quot;P&quot; (dur-date/dur-time/dur-week)
dur-date          = dur-day [dur-time]
dur-time          = &quot;T&quot; (dur-hour / dur-minute / dur-second)
dur-week          = 1*DIGIT &quot;W&quot;
dur-hour          = 1*DIGIT &quot;H&quot; [dur-minute]
dur-minute        = 1*DIGIT &quot;M&quot; [dur-second]
dur-second        = 1*DIGIT &quot;S&quot;
dur-day           = 1*DIGIT &quot;D&quot;
xparams<span class="ref">3</span>          = (array) ( *[ (string) xparamkey =&gt; (string) xparamvalue ] )
propOrderNo       = (int) ordernumber, 1=1st, 2=2nd etc
<br>date/datetime string<span class="ref">*</span> recommended formats
    &quot;20110625051015&quot;,      &quot;20110625 051015&quot;
    &quot;20110625T051015&quot;,     &quot;20110625t051015&quot;
    &quot;2011-06-25 05:10:15&quot;, &quot;2011-06-25T05:10:15&quot;, &quot;2011-06-25t05:10:15&quot;
    &quot;2011/06/25 05:10:15&quot;, &quot;2011/06/25T05:10:15&quot;, &quot;2011/06/25t05:10:15&quot;
    other string formats, acceptable by strtotime function, may (would) work
    <span class="ref">(notice <a href="#date_restriction">date restriction</a>)</span></p>
<p class="label">Example</p>
See rules in detail in <a href="http://kigkonsult.se/downloads/dl.php?f=rfc2445" title="RFC2445" target="_blank">RFC2445</a> - Internet Calendaring and Scheduling Core Object Specification (iCalendar).
<p class="example">$fdate1 = array ( 2001, 1, 1, 1, 1, 1 );
alt.
$fdate1 = array ( &quot;year&quot;  =&gt; 2001
                , &quot;month&quot; =&gt; 1
                , &quot;day&quot;   =&gt; 1
                , &quot;hour&quot;  =&gt; 1
                , &quot;min&quot;   =&gt; 1
                , &quot;sec&quot;   =&gt; 1 );
$fdate2 = array ( 2002, 2, 2, 2, 2, 2 );
$fdate3 = array ( 2003, 3, 3, 3, 3, 3 );
$fdate4 = &quot;4 April 2005 4:4:4&quot;;
$fdate7 = array ( &quot;year&quot;  =&gt; 2007
                , &quot;month&quot; =&gt; 7
                , &quot;day&quot;   =&gt; 7 );
$fdur6  = array ( &quot;week&quot; =&gt; 0
                , &quot;day&quot;  =&gt; 5
                , &quot;hour&quot; =&gt; 5
                , &quot;min&quot;  =&gt; 5
                , &quot;sec&quot;  =&gt; 5 );
$fdur7  = array ( 0, 0, 6 );             // <span class="ref">duration for 6 hours</span>
$fdur8  = &quot;P2D&quot;; // <span class="ref">duration two days</span>
$freebusy->setProperty &quot;freebusy&quot;
                      , &quot;FREE&quot;
                      , array( array( $fdate1, $fdate2 )
                             , array( $fdate3, $fdur6 )
                             , array( $fdate4, $fdate5 )));
$freebusy->setProperty(&quot;freebusy&quot;
                      , &quot;Busy&quot;
                      , array( array( array( $fdate1, $fdate2 )
                             , array( $fdate3, $fdur8 )
                             , array( $fdate4, $fdur7 )
                             , array( $fdate1, $fdate3 )));</p>
<br>
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<a name="GEO"></a><h3>3.2.23 GEO</h3>
<p>
This property specifies information related to the global position for the activity specified by 
<a href="#VEVENT">VEVENT</a> and <a href="#VTODO">VTODO</a> components and is OPTIONAL and MUST NOT occur more than once.
</p>
<p>
Value type for latitude and longitude is FLOAT. &quot;Values for latitude and longitude 
shall be expressed as decimal fractions of degrees. 
Whole degrees of latitude shall be represented by a two-digit decimal number ranging from 0 through 90. 
Whole degrees of longitude shall be represented by a decimal number ranging from 0 through 180. 
When a decimal fraction of a degree is specified, it shall be separated from the whole number of degrees by a decimal point.&quot;
</p>
<p>The output (float) value is presented with six decimals.</p>
<h5>Create GEO</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createGeo()</p>
<p class="label">Example</p>
<p class="example">$component->createGeo();</p>
<h5>Delete GEO</h5>
<p>Remove GEO from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;GEO&quot; )</p>
<p class="label">Example</p>
<p class="example">$vevent->deleteProperty( &quot;GEO&quot; );</p>
<h5>Get GEO</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;GEO&quot; )</p>
<p class="comment">output = array( &quot;latitude&quot;  =&gt; &lt;latitude&gt;
              , &quot;longitude&quot; =&gt; &lt;longitude&gt;))</p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;GEO&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot; =&gt; array ( &quot;latitude&quot;  =&gt; &lt;latitude&gt;
                                 , &quot;longitude&quot; =&gt; &lt;longitude&gt;))
              , &quot;params&quot; =&gt; xparams <span class="ref">1</span> )</p>
<p class="label">Example</p>
<p class="example">$geo = $vevent->getProperty( &quot;GEO&quot; );</p>
<h5>Set GEO</h5>
<p>Insert property value.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;geo&quot;, latitude, longitude [, xparams ] )</p>
<p class="comment">latitude  = (float) latitude
longitude = (float) longitude
xparams <span class="ref">1</span> = (array) ( *[ (string) xparamkey =&gt; (string) xparamvalue ] )</p>
<p class="label">Example</p>
<p class="example">$vevent->setProperty( &quot;geo&quot;, 11.23456, -23.45678 );</p>
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<a name="LAST-MODIFIED"></a><h3>3.2.24 LAST-MODIFIED</h3>
<p>
The property specifies the date and time that the information associated with the <strong>calendar</strong> 
component was last revised in the <strong>calendar</strong> store. 
The property is OPTIONAL and MUST NOT occur more than once in <a href="#VEVENT">VEVENT</a>, 
<a href="#VTODO">VTODO</a>,  <a href="#VJOURNAL">VJOURNAL</a> and <a href="#VTIMEZONE">VTIMEZONE</a> components.
</p>
<p>The value type for LAST-MODIFIED is <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME.</p>
<h5>Create LAST-MODIFIED</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createLastModified()</p>
<p class="label">Example</p>
<p class="example">$component->createLastModified();</p>
<h5>Delete LAST-MODIFIED</h5>
<p>Remove LAST-MODIFIED from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;LAST-MODIFIED&quot; )</p>
<p class="label">Example</p>
<p class="example">$vevent->deleteProperty( &quot;LAST-MODIFIED&quot; );</p>
<h5>Get LAST-MODIFIED</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;LAST-MODIFIED&quot; )</p>
<p class="comment">output = moddate<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;LAST-MODIFIED&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; moddate<span class="ref">1</span>
              , &quot;params&quot; =&gt; xparams<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$lastMod = $vevent->getProperty( &quot;LAST-MODIFIED&quot; );</p>
<h5>Set LAST-MODIFIED</h5>
<p>
Insert property value. Input date is always a <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME or,
if &quot;offset&quot; parameter is used, converted to a <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME.
Notice, use function <a href="#transformDateTime">transformDateTime</a> to change a local datetime to a UTC datetime.
</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;Last-Modified&quot; [, moddate [, xparams ]] )</p>
<p class="comment">
moddate<span class="ref">1</span>       = (array) ( &quot;year&quot;  =&gt; (int) year
                         , &quot;month&quot; =&gt; (int) month
                         , &quot;day&quot;   =&gt; (int) day
                        [, &quot;hour&quot;  =&gt; (int) hour
                         , &quot;min&quot;   =&gt; (int) min
                         , &quot;sec&quot;   =&gt; (int) sec
                         , &quot;tz&quot;    =&gt; offset ]] )
moddate        = (int) year
               , (int) month
               , (int) day
              [, (int) hour
               , (int) min
               , (int) sec ]
moddate        = (array) ( (int) year
                         , (int) month
                         , (int) day
                        [, (int) hour
                         , (int) min
                         , (int) sec
                        [, offset ]] )
moddate        = (array) ( &quot;timestamp&quot; =&gt; (int) timestamp [, &quot;tz&quot; => offset])
moddate        = (string) date/datetime string<span class="ref">*</span>
offset         = (int) (+/-)HHmm[ss], local date + UTC offset =&gt; <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME
xparams<span class="ref">2</span>       = (array) ( *[ (string) xparamkey =&gt; (string) xparamvalue ] )
<br>date/datetime string<span class="ref">*</span> recommended formats
    &quot;20110625&quot;,            &quot;2011-06-25&quot;,          &quot;2011/06/26&quot;
    &quot;20110625051015&quot;,      &quot;20110625 051015&quot;
    &quot;20110625T051015&quot;,     &quot;20110625t051015&quot;
    &quot;2011-06-25 05:10:15&quot;, &quot;2011-06-25T05:10:15&quot;, &quot;2011-06-25t05:10:15&quot;
    &quot;2011/06/25 05:10:15&quot;, &quot;2011/06/25T05:10:15&quot;, &quot;2011/06/25t05:10:15&quot;
    trailing characters (digits), if exists, will be interpreted as offset/timezone
    other string formats, acceptable by strtotime function, may (would) work
    <span class="ref">(notice <a href="#date_restriction">date restriction</a>)</span></p>
<p class="label">Example 1</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
$vtodo = &amp; $vcalendar->newComponent( &quot;vtodo&quot; );
.. .
$vtodo->setProperty(&quot;last-modified&quot;
                    , 2006, 8, 14, 12, 1, 2 );
  <span class="ref">// 14 august 2006 12.01.02 UTC</span></p>
<p class="label">Example 2</p>
<p class="example">$date = array(&quot;year&quot; =&gt; 2006, &quot;month&quot; =&gt; 10, &quot;day&quot; =&gt; 10,
              &quot;hour&quot; =&gt; 10, &quot;min&quot; =&gt; 0, &quot;sec&quot; =&gt; 0, &quot;tz&quot; =&gt; &quot;+0200&quot;);
  <span class="ref">// local date + UTC offset =&gt; <a class="ref" href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME</span>
$vtodo->setProperty( &quot;last-modified&quot;, $date );
.. .</p>
<p class="label">Example 3</p>
<p class="example">$vevent->setProperty( &quot;last-modified&quot; );
  <span class="ref">// current UTC DATE-TIME is set if called without parameters</span></p>
<br>
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<a name="LOCATION"></a><h3>3.2.25 LOCATION</h3>
<p>
The property defines the intended venue for the activity defined by a <strong>calendar</strong> component. 
The property is OPTIONAL and MUST NOT occur more than once in <a href="#VEVENT">VEVENT</a> and <a href="#VTODO">VTODO</a> components.
</p>
<p>The value type for LOCATION is TEXT.</p>
<h5>Create LOCATION</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createLocation()</p>
<p class="label">Example</p>
<p class="example">$component->createLocation();</p>
<h5>Delete LOCATION</h5>
<p>Remove LOCATION from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;LOCATION&quot; )</p>
<p class="label">Example</p>
<p class="example">$vevent->deleteProperty( &quot;LOCATION&quot; );</p>
<h5>Get LOCATION</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;LOCATION&quot; )</p>
<p class="comment">output = location<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;LOCATION&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; location<span class="ref">1</span>
              , &quot;params&quot; =&gt; param<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$location = $vevent->getProperty( &quot;LOCATION&quot; );</p>
<h5>Set LOCATION</h5>
<p>Insert property value.</p>
<p>Parameters, if any, will be ordered as prescribed in rcf2445.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;location&quot;, location [, param] )</p>
<p class="comment">location<span class="ref">1</span> = (string) Value type TEXT
params<span class="ref">2</span>   = (array) ( [&quot;ALTREP&quot; =&gt; (string) &quot;&lt;an alternate text representation, URI&gt;&quot;]
                  [, &quot;LANGUAGE&quot; =&gt; (string) &quot;&lt;lang&gt;&quot;]
                  [, xparams ]
xparams   = *[ (string) xparamkey =&gt; (string) xparamvalue ]</p>
<p class="label">Example</p>
<p class="example">$vevent->setProperty( &quot;location&quot;, &quot;Buckingham Palace&quot; );</p>
<br>
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<a name="ORGANIZER"></a><h3>3.2.26 ORGANIZER</h3>
<p>
The property defines the organizer for a <strong>calendar</strong> component and is OPTIONAL 
and MUST NOT occur more than once in <a href="#VEVENT">VEVENT</a>, <a href="#VTODO">VTODO</a>, 
<a href="#VJOURNAL">VJOURNAL</a> and <a href="#VFREEBUSY">VFREEBUSY</a> components.
</p>
<p>This value type for ORGANIZER is URI, a <strong>calendar</strong> user address.</p>
<h5>Create ORGANIZER</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createOrganizer()</p>
<p class="label">Example</p>
<p class="example">$component->createOrganizer();</p>
<h5>Delete ORGANIZER</h5>
<p>Remove ORGANIZER from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;ORGANIZER&quot; )</p>
<p class="label">Example</p>
<p class="example">$vevent->deleteProperty( &quot;ORGANIZER&quot; );</p>
<h5>Get ORGANIZER</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;ORGANIZER&quot; )</p>
<p class="comment">output = organizer<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;ORGANIZER&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; organizer<span class="ref">1</span>
              , &quot;params&quot; =&gt; params<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$organizer = $vevent->getProperty( &quot;ORGANIZER&quot; );</p>
<h5>Set ORGANIZER</h5>
<p>Insert property value. 
Property value must be prefixed by protocol (ftp://, http://,mailto:, file://.. . ref. rfc 1738 ).
Also DIR parameter must be prefixed by protocol.
SENT-BY parameter must use protocol &quot;mailto:&quot;, prefixed if missing.
</p>
<p>Parameters, if any, will be ordered as prescribed in rcf2445.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;organizer&quot;, organizer [, params] )</p>
<p class="comment">organizer<span class="ref">1</span> = (string) a <strong>calendar</strong> user address (cal-address), a URI as defined by
             [RFC 1738] or any other IANA registered form for a URI.
params<span class="ref">2</span>    = (array) ( [&quot;LANGUAGE&quot; =&gt; (string) &quot;&lt;lang&gt;&quot;
                           (applies to the CN parameter value) ]
                 [, &quot;CN&quot;       =&gt; (string) &quot;common name to be associated
                                   with the <strong>calendar</strong> user
                                   specified by the property&quot;]
                 [, &quot;DIR&quot;      =&gt; (string) &quot;reference to a directory
                         entry associated with the <strong>calendar</strong> user
                                   specified by the property&quot; ]
                 [, &quot;SENT-BY&quot;  =&gt; (string) (cal-address, above)
                                   &quot;single <strong>calendar</strong> user
                                   that is acting on behalf
                                   of the <strong>calendar</strong> user
                                   specified by the property&quot; ]
                 [, xparams ]
xparams    = *[ (string) xparamkey =&gt; (string) xparamvalue ]</p>
<p class="label">Example</p>
<p class="example">
$dir = &quot;ldap://domain.com:6666/o=3DDC%20Comp,c=3DUS??(cn=3DJohn%20Doe)&quot;;
$vevent-&gt;setProperty( &quot;organizer&quot;
                    , &quot;hide@address.com&quot;
                    , array( &quot;CN&quot;      =&gt; &quot;John Doe&quot;
                           , &quot;DIR&quot;     =&gt; $dir
                           , &quot;SENT-BY&quot; =&gt; &quot;hide@address.com&quot;
                           , &quot;X-Key1&quot;  =&gt; &quot;X-Value1&quot;
                           , &quot;X-Key2&quot;  =&gt; &quot;X-Value2&quot; ));</p>
<br>
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<a name="PERCENT-COMPLETE"></a><h3>3.2.27 PERCENT-COMPLETE</h3>
<p>
This property is used by an assignee or delegatee of a <a href="#VTODO">VTODO</a> to 
convey the percent completion of a <a href="#VTODO">VTODO</a> to the Organizer and is 
OPTIONAL and MUST NOT occur more than once.
</p>
<p>
The property value is a positive integer between zero and one hundred. 
A value of "0" indicates the <a href="#VTODO">VTODO</a> has not yet been started. 
A value of "100" indicates that the <a href="#VTODO">VTODO</a> has been completed. 
Integer values in between indicate the percent partially complete.
</p>
<h5>Create PERCENT-COMPLETE</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createPercentComplete()</p>
<p class="label">Example</p>
<p class="example">$component->createPercentComplete();</p>
<h5>Delete PERCENT-COMPLETE</h5>
<p>Remove PERCENT-COMPLETE from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;PERCENT-COMPLETE&quot; )</p>
<p class="label">Example</p>
<p class="example">$vtodo->deleteProperty( &quot;PERCENT-COMPLETE&quot; );</p>
<h5>Get PERCENT-COMPLETE</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;PERCENT-COMPLETE&quot; )</p>
<p class="comment">output = percent<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;PRIORITY&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; percent<span class="ref">1</span>
              , &quot;params&quot; =&gt; xparams<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$percent = $vtodo->getProperty( &quot;PERCENT-COMPLETE&quot; );</p>
<h5>Set PERCENT-COMPLETE</h5>
<p>Insert property value.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;Percent-Complete&quot;, percent [, xparams ] )</p>
<p class="comment">percent<span class="ref">1</span> = (int) Value type INTEGER
xparams<span class="ref">2</span> = (array) ( *[ (string) xparamkey =&gt; (string) xparamvalue ] )</p>
<p class="label">Example</p>
<p class="example">$vtodo->setProperty( &quot;percent-complete&quot;, 90 );</p>
<br>
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<a name="PRIORITY"></a><h3>3.2.28 PRIORITY</h3>
<p>
The property defines the relative priority for a <strong>calendar</strong> component and is OPTIONAL and MUST NOT occur more than once in <a href="#VEVENT">VEVENT</a> and <a href="#VTODO">VTODO</a> components.
</p>
<p>
The priority is specified as an integer in the range zero to nine.<br>
A value of zero (US-ASCII decimal 48) specifies an undefined priority.<br>
A value of one (US-ASCII decimal 49) is the highest priority.<br>
A value of two (US-ASCII decimal 50) is the second highest priority.<br>
Subsequent numbers specify a decreasing ordinal priority.<br>
A value of nine (US-ASCII decimal 58) is the lowest priority.
</p>
<h5>Create PRIORITY</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createPriority()</p>
<p class="label">Example</p>
<p class="example">$component->createPriority();</p>
<h5>Delete PRIORITY</h5>
<p>Remove PRIORITY from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;PRIORITY&quot; )</p>
<p class="label">Example</p>
<p class="example">$vevent->deleteProperty( &quot;PRIORITY&quot; );</p>
<h5>Get PRIORITY</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;PRIORITY&quot; )</p>
<p class="comment">output = priority<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;PRIORITY&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; priority<span class="ref">1</span>
              , &quot;params&quot; =&gt; xparams<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$priority = $vevent->getProperty( &quot;priority&quot; );</p>
<h5>Set PRIORITY</h5>
<p>Insert property value.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;priority&quot;, priority [, xparams ] )</p>
<p class="comment">priority<span class="ref">1</span> = (int) Value type INTEGER
xparams<span class="ref">2</span>  = (array) ( *[ (string) xparamkey =&gt; (string) xparamvalue ] )</p>
<p class="label">Example</p>
<p class="example">$vevent->setProperty( &quot;priority&quot;, 3 );</p>
<br>
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<a name="RDATE"></a><h3>3.2.29 RDATE</h3>
<p>
This property defines the list of date/times for a recurrence set and is OPTIONAL and MAY occur 
more than once in <a href="#VEVENT">VEVENT</a>, <a href="#VTODO">VTODO</a>, <a href="#VJOURNAL">VJOURNAL</a>, 
<a href="#VTIMEZONE">STANDARD</a> and <a href="#VTIMEZONE">DAYLIGHT</a> components.
</p>
<p>
The default value type for RDATE is DATE-TIME, can be set to DATE or PERIOD (params<span class="ref">2</span>).
In <a href="#VTIMEZONE">STANDARD</a> and <a href="#VTIMEZONE">DAYLIGHT</a> components, RDATE MUST be specified as a date-time value type with local time value.
</p>
<h5>Create RDATE</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createRdate()</p>
<p class="label">Example</p>
<p class="example">$component->createRdate();</p>
<h5>Delete RDATE</h5>
<p>Remove RDATE from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;RDATE&quot; )</p>
<p class="label">Example 1</p>
<p>Delete (single/first) RDATE property.</p>
<p class="example">$vtodo->deleteProperty( &quot;RDATE&quot; );</p>
<p class="label">Example 2</p>
<p>Delete RDATE property no 2.</p>
<p class="example">$vjournal->deleteProperty( &quot;RDATE&quot;, 2 );</p>
<p class="label">Example 3</p>
<p>Delete all RDATE properties.</p>
<p class="example">while( $vjournal->deleteProperty( &quot;RDATE&quot; ))
  continue;</p>
<h5>Get RDATE</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;RDATE&quot; )</p>
<p class="comment">output = dates<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;RDATE&quot;, propOrderNo/FALSE , TRUE )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; dates<span class="ref">1</span>
              , &quot;params&quot; =&gt; params<span class="ref">2</span> )</p>
<p class="label">Format 3</p>
<p class="format">getProperty( &quot;RDATE&quot;, propOrderNo )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">Get propOrderNo RDATE</p>
<p class="label">Example</p>
<p class="example">$rdates = $vevent->getProperty( &quot;RDATE&quot; );</p>
<h5>Set RDATE</h5>
<p>Insert property value.</p>
<p>
If &quot;TZID&quot; is set in params, ex. &quot;TZID&quot; = &quot;CET&quot;, all timezone or offset in dates are ignored and DATE-TIME value type is set.<br>
If DATE value type is set in params (&quot;VALUE&quot; = &quot;DATE&quot;), all timezone or offset in dates are ignored.<br>
If &quot;PERIOD&quot; is set in params (&quot;VALUE&quot; = &quot;PERIOD&quot;), DATE-TIME value type is set.<br>
If no &quot;VALUE&quot; parameter in params, DATE-TIME (default) value type is set.<br>
If empty params and offset in 1st date, all remaining dates are set to UTC.<br>
If no &quot;TZID&quot; is set in params and timezone in 1st date, all remaining dates are within this timezone and param &quot;TZID&quot; is set.<br>
If none of the above rules are applicable, DATE-TIME and local date is set default.
</p>
<p>Parameters, if any, will be ordered as prescribed in rcf2445.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;rdate&quot;, dates [, params [, propOrderNo ]] )</p>
<p class="comment">dates<span class="ref">1</span>        = (array) ( date2 *[, date2 ] )
date2         = date / (array) ( startdate, enddate/duration )
startdate     = date
enddate       = date
date          = (array) ( (int) year
                        , (int) month
                        , (int) day
                       [, (int) int hour
                        , (int) min
                        , (int) day
                        , tz ] )
date          = (array) ( &quot;year&quot;  =&gt; (int) year
                        , &quot;month&quot; =&gt; (int) month
                        , &quot;day&quot;   =&gt; (int) day
                       [, &quot;hour&quot;  =&gt; (int) hour
                        , &quot;min&quot;   =&gt; (int) min
                        , &quot;sec&quot;   =&gt; (int) sec
                       [, &quot;tz&quot;    =&gt; tz ]] )
                     // <span class="ref">output format</span>
date          = (array) ( &quot;timestamp&quot; =&gt; (int) timestamp [, &quot;tz&quot; =&gt; tz ] )
date          = (string) date/datetime string<span class="ref">*</span>
tz            = &lt;timezone identifier&gt; / offset
                (timezone will be used as tzidparam, if tzidparam not exists)
offset        = (int) (+/-)HHmm[ss], local date + UTC offset =&gt; <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME
duration      = (array) ( (int) week/false
                       [, (int) day/false
                        , (int) hour
                        , (int) min
                        , (int) sec] )
duration      = (array) ([  &quot;week&quot; =&gt; (int) week / FALSE ,] /
                         [  &quot;day&quot;  =&gt; (int) day / FALSE
                         [, &quot;hour&quot; =&gt; (int) hour
                          , &quot;min&quot;  =&gt; (int) min
                          , &quot;sec&quot;  =&gt; (int) sec ]] );
                     // <span class="ref">output format, only used keys</span>
duration      = (array) ( &quot;sec&quot;  =&gt; (int) sec );
duration      = (string) duration like &quot;P15DT5H0M20S&quot;
params<span class="ref">2</span>       = ([tzidparam ( / datetimeparam / dateparam / periodparam )]
                        *[, xparams ] )
tzidparam     = &quot;TZID&quot; =&gt; (string) &lt;timezone identifier&gt;
                // <span class="ref">output as local DATE-TIME with timezone identifier</span>
                // <span class="ref">if tzidparam=&quot;GMT&quot;/&quot;UTC&quot; then</span>
                // <span class="ref">output date-time are suffixed by 'Z'</span>
datetimeparam = &quot;VALUE&quot; =&gt; &quot;DATE-TIME&quot; // <span class="ref">default, output as DATE-TIME</span>
dateparam     = &quot;VALUE&quot; =&gt; &quot;DATE&quot; // <span class="ref">output as DATE</span>
periodparam   = &quot;VALUE&quot; =&gt; &quot;PERIOD&quot; // <span class="ref">output as PERIOD (datetime)</span>
xparams       = (string) xparamkey =&gt; (string) xparamvalue
propOrderNo   = (int) ordernumber, 1=1st, 2=2nd etc
<br>date/datetime string<span class="ref">*</span> recommended formats
    &quot;20110625&quot;,            &quot;2011-06-25&quot;,          &quot;2011/06/26&quot;
    &quot;20110625051015&quot;,      &quot;20110625 051015&quot;
    &quot;20110625T051015&quot;,     &quot;20110625t051015&quot;
    &quot;2011-06-25 05:10:15&quot;, &quot;2011-06-25T05:10:15&quot;, &quot;2011-06-25t05:10:15&quot;
    &quot;2011/06/25 05:10:15&quot;, &quot;2011/06/25T05:10:15&quot;, &quot;2011/06/25t05:10:15&quot;
    trailing characters (digits), if exists, will be interpreted as offset/timezone
    other string formats, acceptable by strtotime function, may (would) work
    <span class="ref">(notice <a href="#date_restriction">date restriction</a>)</span></p>
<p class="label">Example</p>
See rules in detail in <a href="http://kigkonsult.se/downloads/dl.php?f=rfc2445" title="RFC2445" target="_blank">RFC2445</a> - Internet Calendaring and Scheduling Core Object Specification (iCalendar).<br>
<p class="example">// $rdate1 = array ( 2001, 1, 1, 1, 1, 1 );
// alt.
$rdate1 = array( &quot;year&quot;  =&gt; 2001
               , &quot;month&quot; =&gt; 1
               , &quot;day&quot;   =&gt; 1
               , &quot;hour&quot;  =&gt; 1
               , &quot;min&quot;   =&gt; 1
               , &quot;sec&quot;   =&gt; 1
               , &quot;tz&quot;    =&gt; &quot;GMT&quot; );
$rdate2 = array( 2002, 2, 2, 2, 2, 2, &quot;GMT&quot; );
$rdate3 = &quot;3 March 2003 03.03.03&quot;;
$rdate4 = array( 2004, 4, 4, 4, 4, 4, &quot;GMT&quot; );
$rdate5 = array( 2005, 10, 5, 5, 5, 5 );
$rdate8 = array( &quot;year&quot; =&gt; 2007, &quot;month&quot; =&gt; 7, &quot;day&quot; =&gt; 7 );
$rdur6  = array( &quot;week&quot; =&gt; 0
               , &quot;day&quot;  =&gt; 0
               , &quot;hour&quot; =&gt; 5
               , &quot;min&quot;  =&gt; 5
               , &quot;sec&quot;  =&gt; 5 );
$rdur7  = array( 0, 0, 6 );
  <span class="comment">// duration for 6 hours</span>
$rdur8  = array( &quot;week&quot; =&gt; 8 );
  <span class="comment">// duration for 8 weeks</span>

$vevent = &amp; $vcalendar->newComponent( &quot;vevent&quot; );
$vevent->setProperty( &quot;rdate&quot;, array( $rdate1 ));
  <span class="comment">// one recurrence date, date in 7-params format (DATE-TIME)</span>

$vevent->setProperty( &quot;rdate&quot;, array( $rdate1, $rdate2 ));
  <span class="comment">// two dates, date 7-params format (DATE-TIME)</span>

$vevent->setProperty( &quot;rdate&quot;, array( array( $rdate1, $rdate2 )
                                    , array( $rdate3, $rdate4 ))
                             , array( &quot;VALUE&quot; => &quot;PERIOD&quot; ));
  <span class="comment">// Both fromdate and enddate must have 7 params (DATE-TIME) !!!</span>

$vevent->setProperty( &quot;rdate&quot;, array( array( $rdate2, $rdur6 ))
                             , array( &quot;VALUE&quot; => &quot;PERIOD&quot; ));
  <span class="comment">// one duration (fromdate-duration)</span>

$vevent->setProperty( &quot;rdate&quot;, array( array( $rdate1, $date2 )
                                    , array( $rdate3, $rdur7 ))
                             , array( &quot;VALUE&quot; => &quot;PERIOD&quot; ));
  <span class="comment">// period, pairs of fromdate+enddate and fromdate-duration</span>

$vevent->setProperty( &quot;rdate&quot;, array( $rdate5, $date8 ))
                             , array( &quot;VALUE&quot; => &quot;DATE&quot; ));
  <span class="comment">// dates in DATE format</span>
.. .</p>
<br>
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<a name="RECURRENCE-ID"></a><h3>3.2.30 RECURRENCE-ID</h3>
<p>
This property is used in conjunction with the <a href="#UID">UID</a> and <a href="#SEQUENCE">SEQUENCE</a> 
property to identify a specific instance of a recurring <a href="#VEVENT">VEVENT</a>, <a href="#VTODO">VTODO</a> 
or <a href="#VJOURNAL">VJOURNAL</a> <strong>calendar</strong> component and is OPTIONAL and MAY NOT occur more than once.
</p>
<p>
The property value is the effective value of the <a href="#DTSTART">DTSTART</a> property of the recurrence instance. 
The default value type is DATE-TIME, can be set to DATE (params <span class="ref">2</span>).
</p>
<h5>Create RECURRENCE-ID</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createRecurrenceid()</p>
<p class="label">Example</p>
<p class="example">$component->createRecurrenceid();</p>
<h5>Delete RECURRENCE-ID</h5>
<p>Remove RECURRENCE-ID from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;RECURRENCE-ID&quot; )</p>
<p class="label">Example</p>
<p class="example">$vevent->deleteProperty( &quot;RECURRENCE-ID&quot; );</p>
<h5>Get RECURRENCE-ID</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;RECURRENCE-ID&quot; )</p>
<p class="comment">output = recurrIdDate<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;RECURRENCE-ID&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; recurrIdDate<span class="ref">1</span>
              , &quot;params&quot; =&gt; params<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$recurrDate = $vtodo->getProperty( &quot;RECURRENCE-ID&quot; );</p>
<h5>Set RECURRENCE-ID</h5>
<p>
Insert property value. If DATE value type is expected, &quot;VALUE&quot; = &quot;DATE&quot; 
<b>must</b> be set (in params<span class="ref">2</span>) otherwise DATE-TIME (default) value type is set.
</p>
<p>
If no timezone parameter (tz or tzidparam below) is set (local time) and config <a href="#dTZID">TZID</a> is set,
date-time values will be set WITH timezone from config.
Notice, use function <a href="#transformDateTime">transformDateTime</a> to change a datetime from one time zone to another (or UTC).
</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;recurrence-id&quot;, recurrIdDate [, params ] )</p>
<p class="comment">recurrIdDate<span class="ref">1</span> = (array) ( &quot;year&quot;  =&gt; (int) year
                        , &quot;month&quot; =&gt; (int) month
                        , &quot;day&quot;   =&gt; (int) day
                       [, &quot;hour&quot;  =&gt; (int) hour
                        , &quot;min&quot;   =&gt; (int) min
                        , &quot;sec&quot;   =&gt; (int) sec
                       [, &quot;tz&quot;    =&gt; tz ]] )
recurrIdDate  = (int) year
              , (int) month
              , (int) day
             [, (int) hour
              , (int) min
              , (int) sec
             [, tz ]]
recurrIdDate  = (array) ( (int) year
                        , (int) month
                        , (int) day
                       [, (int) hour
                        , (int) min
                        , (int) sec
                       [, tz ]] )
recurrIdDate  = (array) ( &quot;timestamp&quot; =&gt; (int) timestamp
                    [, &quot;tz&quot;        =&gt; tz ] )
recurrIdDate  = (string) date/datetime string<span class="ref">*</span>
tz            = (string) &lt;timezone identifier&gt; / offset
                (timezone will be used as tzidparam, if tzidparam not exists)
offset        = (int) (+/-)HHmm[ss], local date + UTC offset =&gt; <a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME
params<span class="ref">2</span>       = (array) ([ datetimeparam/dateparam/tzidparam ]
                             [, rangeparam ]
                             [, xparams ] )
datetimeparam = &quot;VALUE&quot; =&gt; &quot;DATE-TIME&quot; // <span class="ref">default, output as DATE-TIME</span>
dateparam     = &quot;VALUE&quot; =&gt; &quot;DATE&quot; // <span class="ref">output as DATE</span>
tzidparam     = &quot;TZID&quot; =&gt; (string) &lt;timezone identifier&gt;
                // <span class="ref">output as local date-time with timezone identifier</span>
                // <span class="ref">if tzidparam=&quot;GMT&quot;/&quot;UTC&quot; then</span>
                // <span class="ref">output date-time are suffixed by 'Z'</span>
rangeparam    = &quot;RANGE&quot; =&gt; ( "THISANDPRIOR" / "THISANDFUTURE" )
                  // <span class="ref">range parameter</span>
xparams       = *[ string) xparamkey =&gt; (string) xparamvalue ]
<br>date/datetime string<span class="ref">*</span> recommended formats
    &quot;20110625&quot;,            &quot;2011-06-25&quot;,          &quot;2011/06/26&quot;
    &quot;20110625051015&quot;,      &quot;20110625 051015&quot;
    &quot;20110625T051015&quot;,     &quot;20110625t051015&quot;
    &quot;2011-06-25 05:10:15&quot;, &quot;2011-06-25T05:10:15&quot;, &quot;2011-06-25t05:10:15&quot;
    &quot;2011/06/25 05:10:15&quot;, &quot;2011/06/25T05:10:15&quot;, &quot;2011/06/25t05:10:15&quot;
    trailing characters (digits), if exists, will be interpreted as offset/timezone
    other string formats, acceptable by strtotime function, may (would) work
    <span class="ref">(notice <a href="#date_restriction">date restriction</a>)</span></p>
<p class="label">Example</p>
<p class="example">$vtodo->setProperty( &quot;recurrence-id&quot;, &quot;3 March 2003 03.03.03&quot; );
  <span class="comment">// 3 march 2003 03.03.03 local time</span></p>
<br>
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<a name="RELATED-TO"></a><h3>3.2.31 RELATED-TO</h3>
<p>
The property is used to represent a relationship or reference between one <strong>calendar</strong> component and another 
and is OPTIONAL and MAY occur more than once in <a href="#VEVENT">VEVENT</a>, <a href="#VTODO">VTODO</a>, <a href="#VJOURNAL">VJOURNAL</a> components.
</p>
<p>
The property value consists of the persistent, globally unique identifier of another <strong>calendar</strong> component. 
This value would be represented in a <strong>calendar</strong> component by the <a href="#UID">UID</a> property.
</p>
<p>The value type for RELATED-TO is TEXT.</p>
<h5>Create RELATED-TO</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createRelatedTo()</p>
<p class="label">Example</p>
<p class="example">$component->createRelatedTo();</p>
<h5>Delete RELATED-TO</h5>
<p>Remove RELATED-TO from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;RELATED-TO&quot; )</p>
<p class="label">Example 1</p>
<p>Delete /single/first) RELATED-TO property</p>
<p class="example">$vtodo->deleteProperty( &quot;RELATED-TO&quot; );</p>
<p class="label">Example 2</p>
<p>Delete RELATED-TO property no 2.</p>
<p class="example">$vjournal->deleteProperty( &quot;RELATED-TO&quot;, 2 );</p>
<p class="label">Example 3</p>
<p>Deleting all RELATED-TO properties.</p>
<p class="example">while( $vjournal->deleteProperty( &quot;RELATED-TO&quot; ))
  continue;</p>
<h5>Get RELATED-TO</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;RELATED-TO&quot; )</p>
<p class="comment">output = relid<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;RELATED-TO&quot;, propOrderNo/FALSE , TRUE )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; relid<span class="ref">1</span>
              , &quot;params&quot; =&gt; params<span class="ref">2</span> )</p>
<p class="label">Format 3</p>
<p class="format">getProperty( &quot;RELATED-TO&quot;, propOrderNo )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">Get propOrderNo RELATED-TO</p>
<p class="label">Example</p>
<p class="example">$relatedId = $vtodo->getProperty( &quot;RELATED-TO&quot; );</p>
<h5>Set RELATED-TO</h5>
<p>Insert property value.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;Related-To&quot;, relid [, params [, propOrderNo ]] )</p>
<p class="comment">relid<span class="ref">1</span>      = (string) Value type TEXT.
params<span class="ref">2</span>     = (array) ( [ reltype ] [, xparams] )
reltype     = &quot;RELTYPE&quot; =&gt; (&quot;PARENT&quot; (Default)
                          / &quot;CHILD&quot;
                          / &quot;SIBLING&quot;
                          / (string) iana-token
                          / (string) x-name )
xparams     = *[ (string) xparamkey =&gt; (string) xparamvalue ]
propOrderNo = (int) ordernumber, 1=1st, 2=2nd etc</p>
<p class="label">Example</p>
<p class="example">$vtodo->setProperty( &quot;related-to&quot;, &quot;19960401-080045-hide@address.com&quot;);</p>
<br>
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<a name="REPEAT"></a><h3>3.2.32 REPEAT</h3>
<p>
This property defines the number of time the <a href="#VALARM">ALARM</a> should be repeated, after the initial trigger.
If the <a href="#VALARM">ALARM</a> triggers more than once, then this property MUST be specified along with the <a href="#DURATION">DURATION</a> property.
</p>
<p>The value type for REPEAT is INTEGER.</p>
<h5>Create REPEAT</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createRepeat()</p>
<p class="label">Example</p>
<p class="example">$component->createRepeat();</p>
<h5>Delete REPEAT</h5>
<p>Remove REPEAT from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;REPEAT&quot; )</p>
<p class="label">Example</p>
<p class="example">$valarm->deleteProperty( &quot;REPEAT&quot; );</p>
<h5>Get REPEAT</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;REPEAT&quot; )</p>
<p class="comment">output = repeatTimes<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;REPEAT&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; repeatTimes<span class="ref">1</span>
              , &quot;params&quot; =&gt; xparams<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$repeat = $vtodo->getProperty( &quot;REPEAT&quot; );</p>
<h5>Set REPEAT</h5>
<p>Insert property value.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;repeat&quot;, repeatTimes [, xparams ] )</p>
<p class="comment">repeatTimes<span class="ref">1</span> = (int) Value type INTEGER
xparams<span class="ref">2</span>     = (array) ( *[ (string) xparamkey =&gt; (string) xparamvalue ] )</p>
<p class="label">Example</p>
<p class="example">$valarm->setProperty( &quot;repeat&quot;, 2 );</p>
<br>
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<a name="REQUEST-STATUS"></a><h3>3.2.33 REQUEST-STATUS</h3>
<p>
This property defines the status code returned for a scheduling request and is OPTIONAL and 
MAY occur more than once in <a href="#VEVENT">VEVENT</a>, <a href="#VTODO">VTODO</a>, <a href="#VJOURNAL">VJOURNAL</a> and <a href="#VFREEBUSY">VFREEBUSY</a> components.
</p>
<p>The value type for REQUEST-STATUS is TEXT and consists of</p>
<dl>
<dt>a short return status component, 
<dd>(in output) a PERIOD character separated 3-tuple of integers, ex 3.11
<dt>a longer return status description component
<dt>optionally a statusspecific data component
</dl>
<p>In output, the components are separated by (BACKSLASHed) SEMICOLON.</p>
<h5>Create REQUEST-STATUS</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createRequestStatus()</p>
<p class="label">Example</p>
<p class="example">$component->createRequestStatus();</p>
<h5>Delete REQUEST-STATUS</h5>
<p>Remove REQUEST-STATUS from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;REQUEST-STATUS&quot; )</p>
<p class="label">Example 1</p>
<p>Delete (single/first) REQUEST-STATUS property.</p>
<p class="example">$vtodo->deleteProperty( &quot;REQUEST-STATUS&quot; );</p>
<p class="label">Example 2</p>
<p>Delete REQUEST-STATUS property no 2.</p>
<p class="example">$vjournal->deleteProperty( &quot;REQUEST-STATUS&quot;, 2 );</p>
<p class="label">Example 3</p>
<p>Deleting all REQUEST-STATUS properties.</p>
<p class="example">while( $vjournal->deleteProperty( &quot;REQUEST-STATUS&quot; ))
  continue;</p>
<h5>Get REQUEST-STATUS</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;REQUEST-STATUS&quot; )</p>
<p class="comment">output = array( &quot;statcode&quot; =&gt; statcode<span class="ref">1</span>
              , &quot;text&quot;     =&gt; errtext<span class="ref">2</span>
            [ , &quot;extdata&quot;  =&gt; extraData<span class="ref"> 3</span> ] )</p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;REQUEST-STATUS&quot;, propOrderNo/FALSE, TRUE )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">output = array( &quot;value&quot; =&gt; array( &quot;statcode&quot; =&gt; statcode<span class="ref">1</span>
                                , &quot;text&quot;     =&gt; errtext<span class="ref">2</span>
                              [ , &quot;extdata&quot;  =&gt; extraData<span class="ref">3</span> ] )
              , &quot;params&quot; =&gt; params<span class="ref">4</span> )</p>
<p class="label">Format 3</p>
<p class="format">getProperty( &quot;REQUEST-STATUS&quot;, propOrderNo )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">Get propOrderNo REQUEST-STATUS</p>
<p class="label">Example</p>
<p class="example">$requestStatus = $vtodo->getProperty( &quot;REQUEST-STATUS&quot; );</p>
<h5>Set REQUEST-STATUS</h5>
<p>Insert property value.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;Request-Status&quot;
           , statcode, errtext [,extraData/FALSE [,params [,propOrderNo]]])</p>
<p class="comment">statcode<span class="ref">1</span>  = (int) Hierarchical, numeric return status code
                          (1*DIGIT &quot;.&quot; 1*DIGIT 1*DIGIT)
errtext<span class="ref">2</span>    = (string) Textual status description
extraData<span class="ref">3</span>  = (string) Textual exception data.
             For example, the offending property name and value
             or complete property line.
params<span class="ref">4</span>     = (array) ( [&quot;LANGUAGE&quot; =&gt; (string) &quot;&lt;lang&gt;&quot;] [, xparams ] )
xparams     = *[ (string) xparamkey =&gt; (string) xparamvalue ]
propOrderNo = (int) ordernumber, 1=1st, 2=2nd etc</p>
<p class="label">Example</p>
<p class="example">$vfreebusy->setProperty(&quot;request-status&quot;
                       , 2.00
                       , &quot;Invalid property value&quot;
                       , &quot;DTSTART:96-Apr-31&quot;);</p>
<br>
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<a name="RESOURCES"></a><h3>3.2.34 RESOURCES</h3>
<p>
This property defines the equipment or resources anticipated for an activity specified by a <strong>calendar</strong> entity 
and is OPTIONAL and MAY occur more than once in <a href="#VEVENT">VEVENT</a> and <a href="#VTODO">VTODO</a> components.
</p>
<p>The value type for RESOURCES is TEXT.</p>
<h5>Create RESOURCES</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createResources()</p>
<p class="label">Example</p>
<p class="example">$component->createResources();</p>
<h5>Delete RESOURCES</h5>
<p>Remove RESOURCES from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;RESOURCES&quot; )</p>
<p class="label">Example 1</p>
<p>Delete (single/first) RESOURCES property.</p>
<p class="example">$vevent->deleteProperty( &quot;RESOURCES&quot; );</p>
<p class="label">Example 2</p>
<p>Delete RESOURCES property no 2.</p>
<p class="example">$vevent->deleteProperty( &quot;RESOURCES&quot;, 2 );</p>
<p class="label">Example 3</p>
<p>Delete all RESOURCES properties.<p>
<p class="example">while( $vevent->deleteProperty( &quot;RESOURCES&quot; ))
  continue;</p>
<h5>Get RESOURCES</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;RESOURCES&quot; )</p>
<p class="comment">output = resources<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;RESOURCES&quot;, propOrderNo/FALSE, TRUE )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; resources<span class="ref">1</span>
              , &quot;params&quot; =&gt; params<span class="ref">2</span> )</p>
<p class="label">Format 3</p>
<p class="format">getProperty( &quot;RESOURCES&quot;, propOrderNo )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">Get propOrderNo RESOURCES</p>
<p class="label">Example</p>
<p class="example">$resources = $vtodo->getProperty( &quot;RESOURCES&quot; );</p>
<h5>Set RESOURCES</h5>
<p>Insert property value.</p>
<p>Parameters, if any, will be ordered as prescribed in rcf2445.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;resources&quot;, resources [, params [, propOrderNo ]] )</p>
<p class="comment">resources<span class="ref">1</span>  = (string) resource / (array) ( *resource )
resource    = (string) textual resources or subtypes of the <strong>calendar</strong> component,
                       can be specified as a list of resources
                       separated by the COMMA character.
params<span class="ref">2</span>     = (array) (
                   [ &quot;ALTREP&quot; =&gt; (string) &quot;&lt;an alternate text representation, URI&gt;&quot;]
                   [, &quot;LANGUAGE&quot; =&gt; (string) &quot;&lt;lang&gt;&quot;]
                   [, xparams] )
xparams     = *[ (string) xparamkey =&gt; (string) xparamvalue ]
propOrderNo = (int) ordernumber, 1=1st, 2=2nd etc</p>
<p class="label">Example</p>
<p class="example">$vevent->setProperty( &quot;resources&quot;, &quot;COMPUTER PROJECTOR&quot; );</p>
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<a name="RRULE"></a><h3>3.2.35 RRULE</h3>
<p>
This property defines a rule or repeating pattern for recurring <a href="#VEVENT">EVENTs</a>, <a href="#VTODO">TODOs</a>, 
<a href="#VTIMEZONE">STANDARD</a> or <a href="#VTIMEZONE">DAYLIGHT</a> definitions and is OPTIONAL and MAY occur more than once.
</p>
<h5>Create RRULE</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createRrule()</p>
<p class="label">Example</p>
<p class="example">$component->createRrule();</p>
<h5>Delete RRULE</h5>
<p>Remove RRULE from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;RRULE&quot; )</p>
<p class="label">Example 1</p>
<p>Delete (single/first) RRULE property.</p>
<p class="example">$vevent->deleteProperty( &quot;RRULE&quot; );</p>
<p class="label">Example 2</p>
<p>Delete RRULE property no 2.</p>
<p class="example">$vevent->deleteProperty( &quot;RRULE&quot;, 2 );</p>
<p class="label">Example 3</p>
<p>Delete all RRULE properties.</p>
<p class="example">while( $vevent->deleteProperty( &quot;RRULE&quot; ))
  continue;</p>
<h5>Get RRULE</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;RRULE&quot; )</p>
<p class="comment">output = recur<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;RRULE&quot;, propOrderNo/FALSE, TRUE )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; recur<span class="ref">1</span>
              , &quot;params&quot; =&gt; xparams<span class="ref">2</span> )</p>
<p class="label">Format 3</p>
<p class="format">getProperty( &quot;RRULE&quot;, propOrderNo )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">Get propOrderNo RRULE</p>
<p class="label">Example</p>
<p class="example">$rrules = $vtodo->getProperty( &quot;RRULE&quot; );</p>
<h5>Set RRULE</h5>
<p>Insert property value.</p>
<p>Parameters will be ordered as prescribed in rcf2445.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;rrule&quot;, recur [, xparams [, propOrderNo ]] )</p>
<p>
For rules example see <a href="#EXRULE">Exrule</a> format and in detail in <a href="http://kigkonsult.se/downloads/dl.php?f=rfc2445" title="RFC2445" target="_blank">RFC2445</a> - Internet Calendaring and Scheduling Core Object Specification (iCalendar).
</p>
<p class="comment">recur<span class="ref">1</span>      = see <a href="#EXRULE">Exrule</a>
xparams<span class="ref">2</span>    = (array) ( *[ (string) xparamkey =&gt; (string) xparamvalue ] )
propOrderNo = (int) ordernumber, 1=1st, 2=2nd etc</p>
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<a name="SEQUENCE"></a><h3>3.2.36 SEQUENCE</h3>
<p>
This property defines the revision sequence number of the <strong>calendar</strong> component within a sequence of revisions.
The property is OPTIONAL and MUST NOT occur more than once in <a href="#VEVENT">VEVENT</a>,
<a href="#VTODO">VTODO</a> and <a href="#VJOURNAL">VJOURNAL</a> components.
</p>
<p class="quotes">
It is monotonically incremented by the <a href="#ORGANIZER">ORGANIZER's</a> CUA (Calendar
User Agent) each time the <a href="#ORGANIZER">ORGANIZER</a> makes a significant revision
to the <strong>calendar</strong> component.

When the <a href="#ORGANIZER">ORGANIZER</a> makes changes to one of the following
properties, the sequence number MUST be incremented: <a href="#DTSTART">DTSTART</a>,
<a href="#DTEND">DTEND</a>, <a href="#DUE">DUE</a>, <a href="#RDATE">RDATE</a>, <a href="#RRULE">RRULE</a>,
<a href="#EXDATE">EXDATE</a>, <a href="#EXRULE">EXRULE</a>, <a href="#STATUS">STATUS</a>. In addition,
changes made by the <a href="#ORGANIZER">ORGANIZER</a> to other properties can also force
the sequence number to be incremented. The <a href="#ORGANIZER">ORGANIZER</a> CUA MUST
increment the sequence number when ever it makes changes to
properties in the <strong>calendar</strong> component that the <a href="#ORGANIZER">ORGANIZER</a>
deems will jeopardize the validity of the participation status of the
<a href="#ATTENDEE">Attendees</a>. For example, changing the location
of a meeting from one locale to another distant locale could
effectively impact the participation status of the <a href="#ATTENDEE">Attendees</a>.
</p>
<p>The value type of SEQUENCE is INTEGER.</p>
<h5>Create SEQUENCE</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createSequence()</p>
<p class="label">Example</p>
<p class="example">$component->createSequence();</p>
<h5>Delete SEQUENCE</h5>
<p>Remove SEQUENCE from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;SEQUENCE&quot; )</p>
<p class="label">Example</p>
<p class="example">$vtodo->deleteProperty( &quot;SEQUENCE&quot; );</p>
<h5>Get SEQUENCE</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;SEQUENCE&quot; )</p>
<p class="comment">output = sequence<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;SEQUENCE&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; sequence<span class="ref">1</span>
              , &quot;params&quot; =&gt; xparams<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$sequence = $vtodo->getProperty( &quot;SEQUENCE&quot; );</p>
<h5>Set SEQUENCE</h5>
<p>Insert property value.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;sequence&quot; [, sequence [, xparams ]] )</p>
<p class="comment">sequence<span class="ref">1</span> = (int) Value type INTEGER
xparams<span class="ref">2</span>  = (array) ( *[ (string) xparamkey =&gt; (string) xparamvalue ] )</p>
<p class="label">Example 1</p>
<p class="example">$vevent->setProperty( &quot;sequence&quot;, 2 );
  <span class="comment">// set sequence number to 2</span></p>
<p class="label">Example 2</p>
<p class="example">$vevent->setProperty( &quot;sequence&quot; );
  <span class="comment">// force sequence number to be set to 0
  // or, if sequence exists, incremented by 1</span></p>
<br>
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<a name="STATUS"></a><h3>3.2.37 STATUS</h3>
<p>
This property defines the overall status or confirmation for the <strong>calendar</strong> component. 
The property is OPTIONAL and MUST NOT occur more than once in <a href="#VEVENT">VEVENT</a>, <a href="#VTODO">VTODO</a> 
and <a href="#VJOURNAL">VJOURNAL</a> components.
</p>
<h5>Create STATUS</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createStatus()</p>
<p class="label">Example</p>
<p class="example">$component->createStatus();</p>
<h5>Delete STATUS</h5>
<p>Remove STATUS from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;STATUS&quot; )</p>
<p class="label">Example</p>
<p class="example">$vtodo->deleteProperty( &quot;STATUS&quot; );</p>
<h5>Get STATUS</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;STATUS&quot; )</p>
<p class="comment">output = status<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;STATUS&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; status<span class="ref">1</span>
              , &quot;params&quot; =&gt; xparams<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$status = $vtodo->getProperty( &quot;STATUS&quot; );</p>
<h5>Set STATUS</h5>
<p>Insert property value.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;status&quot;, status [, xparams ] )</p>
<p class="comment">                          // <span class="ref">Status values for a <a href="#vevent">VEVENT</a></span>
status<span class="ref">1</span>  = &quot;TENTATIVE&quot;    // <span class="ref">Indicates event is tentative</span>
         / &quot;CONFIRMED&quot;    // <span class="ref">Indicates event is definite</span>
         / &quot;CANCELLED&quot;    // <span class="ref">Indicates event was cancelled</span>
                          // <span class="ref">Status values for <a href="#VTODO">VTODO</a></span>
status<span class="ref">1</span>  = &quot;NEEDS-ACTION&quot; // <span class="ref">Indicates to-do needs action</span>
         / &quot;COMPLETED&quot;    // <span class="ref">Indicates to-do completed</span>
         / &quot;IN-PROCESS&quot;   // <span class="ref">Indicates to-do in process of</span>
         / &quot;CANCELLED&quot;    // <span class="ref">Indicates to-do was cancelled</span>
                          // <span class="ref">Status values for <a href="#VJOURNAL">VJOURNAL</a></span>
status<span class="ref">1</span>  = &quot;DRAFT&quot;        // <span class="ref">Indicates journal is draft</span>
         / &quot;FINAL&quot;        // <span class="ref">Indicates journal is final</span>
         / &quot;CANCELLED&quot;    // <span class="ref">Indicates journal is removed</span>
xparams<span class="ref">2</span> = (array) ( *[ (string) xparamkey =&gt; (string) xparamvalue ] )</p>
<p class="label">Example</p>
<p class="example">$vevent->setProperty( &quot;Status&quot;, &quot;COMPLETED&quot; );</p>
<br>
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<a name="SUMMARY"></a><h3>3.2.38 SUMMARY</h3>
<p>
This property defines a short (&quot;one line&quot;) summary or subject for the <strong>calendar</strong> component. 
(In &quot;rfc2445, Recommended Practices&quot;, up to 255 characters) (, analogous to a mail SUBJECT). 
The property is OPTIONAL and MUST NOT occur more than once in <a href="#VEVENT">VEVENT</a>, <a href="#VTODO">VTODO</a> 
and <a href="#VJOURNAL">VJOURNAL</a> components. The property is REQUIRED and MUST occur once in <a href="#VALARM">VALARM</a> (EMAIL) <strong>calendar</strong> component.
</p>
<p>The value type for SUMMARY is TEXT.</p>
<h5>Create SUMMARY</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createSummary()</p>
<p class="label">Example</p>
<p class="example">$component->createSummary();</p>
<h5>Delete SUMMARY</h5>
<p>Remove SUMMARY from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;SUMMARY&quot; )</p>
<p class="label">Example</p>
<p class="example">$vevent->deleteProperty( &quot;SUMMARY&quot; );</p>
<h5>Get SUMMARY</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;SUMMARY&quot; )</p>
<p class="comment">output = summary<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;SUMMARY&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; summary<span class="ref">1</span>
              , &quot;params&quot; =&gt; params<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$summary = $vtodo->getProperty( &quot;SUMMARY&quot; );</p>
<h5>Set SUMMARY</h5>
<p>Insert property value.</p>
<p>Parameters, if any, will be ordered as prescribed in rcf2445.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;summary&quot;, summary [, params ] )</p>
<p CLASS="comment">summary<span class="ref">1</span> = (string) Value type TEXT,
           a short, one line summary about the activity or journal entry.
params<span class="ref">2</span>  = array( [&quot;ALTREP&quot;   =&gt; (string) &quot;&lt;an alternate text representation, URI&gt;&quot;]
                [, &quot;LANGUAGE&quot; =&gt; (string) &quot;&lt;lang&gt;&quot;]
                [, xparams ] )
xparams  = *[ (string) xparamkey =&gt; (string) xparamvalue ]</p>
<p class="label">Example</p>
<p class="example">$vevent->setProperty( &quot;summary&quot;, &quot;This is a summary&quot; );</p>
<br>
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<a name="TRANSP"></a><h3>3.2.39 TRANSP</h3>
<p>
This property defines whether an <a href="#VEVENT">EVENT</a> is transparent or not to busy time searches and is OPTIONAL and MUST NOT occur more than once.
</p>
<h5>Create TRANSP</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createTransp()</p>
<p class="label">Example</p>
<p class="example">$component->createTransp();</p>
<h5>Delete TRANSP</h5>
<p>Remove TRANSP from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;TRANSP&quot; )</p>
<p class="label">Example</p>
<p class="example">$vevent->deleteProperty( &quot;TRANSP&quot; );</p>
<h5>Get TRANSP</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;TRANSP&quot; )</p>
<p class="comment">output = transp<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;TRANSP&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; transp<span class="ref">1</span>
              , &quot;params&quot; =&gt; xparams<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$transp = $vtodo->getProperty( &quot;TRANSP&quot; );</p>
<h5>Set TRANSP</h5>
<p>Insert property value.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;transp&quot;, transp [, xparams ] )</p>
<p class="comment">transp<span class="ref">1</span>  = &quot;OPAQUE&quot; / &quot;TRANSPARENT&quot;
xparams<span class="ref">2</span> = (array) ( *[ (string) xparamkey =&gt; (string) xparamvalue ] )</p>
<p class="label">Example</p>
<p class="example">$vevent->setProperty( &quot;transp&quot;, &quot;TRANSPARENT&quot; );</p>
<br>
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<a name="TRIGGER"></a><h3>3.2.40 TRIGGER</h3>
<p>
This property specifies when an <a href="#VALARM">ALARM</a> will trigger and is REQUIRED and MUST NOT occur more than once.
</p>
<p>
The default value type is DURATION. The value type can be set to a DATE-TIME value type, 
in which case the value MUST specify an <a href="#DATE_WITH_UTC_TIME">UTC</a> formatted DATE-TIME value.
</p>
<h5>Create TRIGGER</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createTrigger()</p>
<p class="label">Example</p>
<p class="example">$component->createTrigger();</p>
<h5>Delete TRIGGER</h5>
<p>Remove TRIGGER from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;TRIGGER&quot; )</p>
<p class="label">Example</p>
<p class="example">$valarm->deleteProperty( &quot;TRIGGER&quot; );</p>
<h5>Get TRIGGER</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;TRIGGER&quot; )</p>
<p class="comment">output = duration/date</p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;TRIGGER&quot;, FALSE , TRUE )</p>
<p class="comment">output   = array( &quot;value&quot;        =&gt; duration<span class="ref">1</span>/date<span class="ref">3</span> )
                , &quot;params&quot;       =&gt; params<span class="ref">4</span> )
<p class="label">Example</p>
<p class="example">$trigger = $vtodo->getProperty( &quot;TRIGGER&quot; );</p>
<h5>Set TRIGGER</h5>
<p>Insert property value.</p>
<p>Note, use function <a href="#transformDateTime">transformDateTime</a> to change a (local) datetime to UTC time zone.</p>
<p class="label">Format 1</p>
<p class="format">setProperty( &quot;trigger&quot;, duration<span class="ref">1</span> [, params<span class="ref">4</span> ] )</p>
<p class="label">Format 2</p>
<p class="format">setProperty( &quot;trigger&quot;, duration<span class="ref">2</span> [, params<span class="ref">4</span> ] )</p>
<p class="label">Format 3</p>
<p class="format">setProperty( &quot;trigger&quot;, date<span class="ref">3</span> [, params<span class="ref">4</span> ] )</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;trigger&quot;, (int) year / FALSE
                      , (int) month / FALSE
                      , (int) day / FALSE
                     [, (int) week / FALSE
                     [, (int) hour / FALSE
                      , (int) min / FALSE
                      , (int) sec / FALSE
                     [, relatedStart
                     [, before
                     [, params<span class="ref">4</span> ]]]]] )</p>
<p class="comment">duration<span class="ref">1</span> = (array) ( &quot;week&quot;     =&gt; (int) week
                , &quot;relatedStart&quot; =&gt; relatedStart
                , &quot;before&quot;       =&gt; before )
duration<span class="ref">1</span> = (array) ( &quot;day&quot;  =&gt; (int) day
                , &quot;hour&quot; =&gt; (int) hour
                , &quot;min&quot;  =&gt; (int) min
                , &quot;sec&quot;  =&gt; (int) sec
                , &quot;relatedStart&quot; =&gt; relatedStart
                , &quot;before&quot;       =&gt; before )
relatedStart = (bool) TRUE  : related start (default),
                      FALSE : related end
before       = (booL) TRUE  : before relatedStart (default),
                      FALSE : after relatedStart
duration<span class="ref">2</span> = (string) dur-value = ([&quot;+&quot;]/&quot;-&quot;)&quot;P&quot;(dur-date/dur-time/dur-week)
dur-date     = dur-day [dur-time]
dur-time     = &quot;T&quot; (dur-hour / dur-minute / dur-second)
dur-week     = 1*DIGIT &quot;W&quot;
dur-day      = 1*DIGIT &quot;D&quot;
dur-hour     = 1*DIGIT &quot;H&quot; [dur-minute]
dur-minute   = 1*DIGIT &quot;M&quot; [dur-second]
dur-second   = 1*DIGIT &quot;S&quot;
date<span class="ref">3</span>        = (array) ( &quot;year&quot;  =&gt; (int) year // <span class="ref"><a href="#DATE_WITH_UTC_TIME">UTC</a> DATE-TIME</span>
                       , &quot;month&quot; =&gt; (int) month
                       , &quot;day&quot;   =&gt; (int) day
                      [, &quot;hour&quot;  =&gt; (int) hour
                       , &quot;min&quot;   =&gt; (int) min
                       , &quot;sec&quot;   =&gt; (int) sec ])
date<span class="ref">3</span>        = (array) ( &quot;timestamp&quot; =&gt; (int) timestamp ) // <span class="ref"><a class="ref" href="#DATE_WITH_UTC_TIME">UTC</a>DATE-TIME</span>
date<span class="ref">3</span>        = (string) datetime string<span class="ref">*</span>
params<span class="ref">4</span>      = (array) ( [[ reltype [, trigRelparam ]] / datetimeparam ]
                    [, xparams ] )
reltyp       = &quot;RELATED&quot; =&gt; &quot;START&quot; (default) / &quot;END&quot;
trigRelparam = &quot;VALUE&quot; =&gt; &quot;DURATION&quot;
datetimeparam= &quot;VALUE&quot; =&gt; &quot;DATE-TIME&quot;
xparams      = *[ (string) xparamkey =&gt; (string) xparamvalue ]
<br>datetime string<span class="ref">*</span> recommended formats
    &quot;20110625&quot;,            &quot;2011-06-25&quot;,          &quot;2011/06/26&quot;
    &quot;20110625051015&quot;,      &quot;20110625 051015&quot;
    &quot;20110625T051015&quot;,     &quot;20110625t051015&quot;
    &quot;2011-06-25 05:10:15&quot;, &quot;2011-06-25T05:10:15&quot;, &quot;2011-06-25t05:10:15&quot;
    &quot;2011/06/25 05:10:15&quot;, &quot;2011/06/25T05:10:15&quot;, &quot;2011/06/25t05:10:15&quot;
    other string formats, acceptable by strtotime function, may (would) work
    <span class="ref">(notice <a href="#date_restriction">date restriction</a>)</span></p>
<p class="label">Example 1</p>
<p>A duration, 1 hour 2 min 3 sec, before start</p>
<p class="example">$valarm->setProperty( &quot;trigger&quot;
                    , FALSE, FALSE, FALSE, FALSE, 1, 2, 3 );</p>
<p class="label">Example 2</p>
<p>A duration, 1 hour 2 min 3 sec, before start</p>
<p class="example">$valarm->setProperty( &quot;trigger&quot;
                    , array (&quot;hour&quot;=&gt;1,&quot;min&quot;=&gt;2,&quot;sec&quot;=&gt;3 );
</p>
<p class="label">Example 3</p>
<p>A duration, 1 hour 2 min 3 sec, before start</p>
<p class="example">$valarm->setProperty( &quot;trigger&quot;
                    , &quot;PT1H2M3S&quot; );</p>
<p class="label">Example 4</p>
<p>A duration, 1 week after end.</p>
<p class="example">$valarm->setProperty( &quot;trigger&quot;
                    , FALSE, FALSE, FALSE, 1
                    , FALSE, FALSE, FALSE, FALSE, FALSE );</p>
<p class="label">Example 5</p>
<p>A duration, 1 week after end.</p>
<p class="example">$valarm->setProperty( &quot;trigger&quot;
                    , array ( &quot;week&quot; =&gt; 1
                            , &quot;relatedStart&quot; =&gt; FALSE
                            , &quot;before&quot;       =&gt; FALSE ));</p>
<p class="label">Example 6</p>
<p>A duration, 1 week after end.</p>
<p class="example">$valarm->setProperty( &quot;trigger&quot;
                    , &quot;P1W&quot;
                    , array( &quot;related&quot; =&gt; &quot;END&quot; ));</p>
<p class="label">Example 7</p>
<p class="example">$valarm->setProperty( &quot;trigger&quot;
                    , array( &quot;year&quot; =&gt; 2007
                           , &quot;month&quot; =&gt; 6
                           , &quot;day&quot;   =&gt; 5,
                           , &quot;hour&quot;  =&gt; 2
                           , &quot;min&quot;   =&gt; 2
                           , &quot;sec&quot;   =&gt; 3 ));</p>
<br>
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<a name="TZID"></a><h3>3.2.41 TZID</h3>
<p>
This property specifies the text value that uniquely identifies the <a href="#VTIMEZONE">VTIMEZONE</a> <strong>calendar</strong> component 
and is REQUIRED, but MUST NOT occur more than once.
</p>
<p>The value type for TZID is TEXT.</p>
<h5>Create TZID</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createTzid()</p>
<p class="label">Example</p>
<p class="example">$component->createTzid();</p>
<h5>Delete TZID</h5>
<p>Remove TZID from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;TZID&quot; )</p>
<p class="label">Example</p>
<p class="example">$vtimezone->deleteProperty( &quot;TZID&quot; );</p>
<h5>Get TZID</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;TZID&quot; )</p>
<p class="comment">output = tzid<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;TZID&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; tzid<span class="ref">1</span>
              , &quot;params&quot; =&gt; xparams<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$tzid = $vtimezone->getProperty( &quot;TZID&quot; );</p>
<h5>Set TZID</h5>
<p>Insert property value.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;tzid&quot;, tzid [, xparams ] )</p>
<p class="comment">tzid<span class="ref">1</span>    = (string) Value type TEXT
xparams<span class="ref">2</span> = (array)( *[ (string) xparamkey =&gt; (string) xparamvalue ] )</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
$vtimezone = &amp; $vcalendar->newComponent( &quot;vtimezone&quot; );
$vtimezone->setProperty( &quot;tzid&quot;, &quot;US-Eastern&quot; );
.. .</p>
<br>
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<a name="TZNAME"></a><h3>3.2.42 TZNAME</h3>
<p>
This property specifies the customary designation for a <a href="#VTIMEZONE">STANDARD</a> or <a href="#VTIMEZONE">DAYLIGHT</a> description 
and is OPTIONAL and MAY occur more than once.
</p>
<p>The value type for TZNAME is TEXT.</p>
<h5>Create TZNAME</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createTzname()</p>
<p class="label">Example</p>
<p class="example">$component->createTzname();</p>
<h5>Delete TZNAME</h5>
<p>Remove TZNAME from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;TZNAME&quot; )</p>
<p class="label">Example 1</p>
<p>Delete (single/first) TZNAME property.</p>
<p class="example">$vtimezonestd->deleteProperty( &quot;TZNAME&quot; );</p>
<p class="label">Example 2</p>
<p>Delete TZNAME property no 2.</p>
<p class="example">$vtimezonestd->deleteProperty( &quot;TZNAME&quot;, 2 );</p>
<p class="label">Example 3</p>
<p>Deleting all TZNAME properties.</p>
<p class="example">while( $vtimezonestd->deleteProperty( &quot;TZNAME&quot; ))
  continue;</p>
<h5>Get TZNAME</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;TZNAME&quot; )</p>
<p class="comment">output = tzname<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;TZNAME&quot;, propOrderNo/FALSE, TRUE )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; tzname<span class="ref">1</span>
              , &quot;params&quot; =&gt; params<span class="ref">2</span> )</p>
<p class="label">Format 3</p>
<p class="format">getProperty( &quot;TZNAME&quot;, propOrderNo )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">Get propOrderNo TZNAME</p>
<p class="label">Example</p>
<p class="example">$tzname = $timezonestandard->getProperty( &quot;TZNAME&quot; );</p>
<h5>Set TZNAME</h5>
<p>Insert property value.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;tzname&quot;, tzname [, params [, propOrderNo ]] )</p>
<p class="comment">tzname<span class="ref">1</span>     = (string) Value type TEXT
params<span class="ref">2</span>     = (array) ( [ &quot;LANGUAGE&quot; =&gt; (string) &quot;&lt;lang&gt;&quot; ] [, xparams ] )
xparams     = *[ (string) xparamkey =&gt; (string) xparamvalue ]
propOrderNo = (int) ordernumber, 1=1st, 2=2nd etc</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
$vtimezone = &amp; $vcalendar->newComponent( &quot;vtimezone&quot; );
$vtimezone->setProperty( &quot;Tzid&quot;, &quot;US-Eastern&quot; );
$vtimezone->setProperty( &quot;Last-Modified&quot;, &quot;19870101&quot; );
$standard = &amp; $vtimezone->newComponent( &quot;standard&quot; );
$standard->setProperty( &quot;tzname&quot;, &quot;EST&quot; );
.. .</p>
<br>
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<a name="TZOFFSETFROM"></a><h3>3.2.43 TZOFFSETFROM</h3>
<p>
This property specifies the offset which is in use prior to this <a href="#VTIMEZONE">TIMEZONE</a> observance.
The property is REQUIRED, but MUST NOT occur more than once in <a href="#VTIMEZONE">STANDARD</a> and <a href="#VTIMEZONE">DAYLIGHT</a> components.
</p>
<p>The value type is UTC-OFFSET, &quot;+&quot; / &quot;-&quot; time-hour (2*DIGIT) time-minute (2*DIGIT) [time-second (2*DIGIT)].</p>
<h5>Create TZOFFSETFROM</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createTzoffsetfrom()</p>
<p class="label">Example</p>
<p class="example">$component->createTzoffsetfrom();</p>
<h5>Delete TZOFFSETFROM</h5>
<p>Remove TZOFFSETFROM from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;TZOFFSETFROM&quot; )</p>
<p class="label">Example</p>
<p class="example">$vtimezonestd->deleteProperty( &quot;TZOFFSETFROM&quot; );</p>
<h5>Get TZOFFSETFROM</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;TZOFFSETFROM&quot; )</p>
<p class="comment">output = tzoffsetfrom<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;TZOFFSETFROM&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; tzoffsetfrom<span class="ref">1</span>
              , &quot;params&quot; =&gt; xparams<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$tzoffsetfrom = $timezonestandard->getProperty( &quot;TZOFFSETFROM&quot; );</p>
<h5>Set TZOFFSETFROM</h5>
<p>Insert property value.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;tzoffsetfrom&quot;, tzoffsetfrom [, xparams ] )</p>
<p class="comment">tzoffsetfrom<span class="ref">1</span> = (int) (+/-)HHmm[ss], UTC offset
xparams<span class="ref">2</span>      = (array) ( *[ /string) xparamkey =&gt; (string) xparamvalue ] )</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
$vtimezone = &amp; $vcalendar->newComponent( &quot;vtimezone&quot; );
$vtimezone->setProperty( &quot;Tzid&quot;, &quot;US-Eastern&quot; );
$vtimezone->setProperty( &quot;Last-Modified&quot;, &quot;19870101&quot; );
$standard = &amp; $vtimezone->newComponent( &quot;standard&quot; );
$standard->setProperty( &quot;tzname&quot;, &quot;EST&quot; );
$standard->setProperty( &quot;tzoffsetfrom&quot;, &quot;-0500&quot; );
.. .</p>
<br>
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<a name="TZOFFSETTO"></a><h3>3.2.44 TZOFFSETTO</h3>
<p>
This property specifies the offset which is in use in this <a href="#VTIMEZONE">TIMEZONE</a> observance.
The property is REQUIRED, but MUST NOT occur more than once in <a href="#VTIMEZONE">STANDARD</a> and <a href="#VTIMEZONE">DAYLIGHT</a> components.
</p>
<p>The value type is UTC-OFFSET, &quot;+&quot; / &quot;-&quot; time-hour (2*DIGIT) time-minute (2*DIGIT) [time-second (2*DIGIT)].</p>
<h5>Create TZOFFSETTO</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createTzoffsetto()</p>
<p class="label">Example</p>
<p class="example">$component->createTzoffsetto();</p>
<h5>Delete TZOFFSETTO</h5>
<p>Remove TZOFFSETTO from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;TZOFFSETTO&quot; )</p>
<p class="label">Example</p>
<p class="example">$daylight->deleteProperty( &quot;TZOFFSETTO&quot; );</p>
<h5>Get TZOFFSETTO</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;TZOFFSETTO&quot; )</p>
<p class="comment">output = tzoffsetto<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;TZOFFSETTO&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; tzoffsetto<span class="ref">1</span>
              , &quot;params&quot; =&gt; xparams<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$tzoffsetto = $timezonestandard->getProperty( &quot;TZOFFSETTO&quot; );</p>
<h5>Set TZOFFSETTO</h5>
<p>Insert property value.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;tzoffsetto&quot;, tzoffsetto [, xparams ] )</p>
<p class="comment">tzoffsetto<span class="ref">1</span> = (int) (+/-)HHmm[ss], UTC offset
xparams<span class="ref">2</span>    = array( *[ (string) xparamkey =&gt; (string) xparamvalue ] )</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
$vtimezone = &amp; $vcalendar->newComponent( &quot;vtimezone&quot; );
$vtimezone->setProperty( &quot;Tzid&quot;, &quot;US-Eastern&quot; );
$vtimezone->setProperty( &quot;Last-Modified&quot;, &quot;19870101&quot; );
$standard = &amp; $vtimezone->newComponent( &quot;standard&quot; );
.. .
$daylight = &amp; $vtimezone->newComponent( &quot;daylight&quot; );
$daylight->setProperty( &quot;tzoffsetto&quot;, &quot;1345&quot; );
.. .</p>
<br>
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<a name="TZURL"></a><h3>3.2.45 TZURL</h3>
<p>
The TZURL provides a means for a <a href="#VTIMEZONE">VTIMEZONE</a> component to point to
a network location that can be used to retrieve an up-to-date version of itself. The property
is OPTIONAL and MUST NOT occur more than once.
</p>
<p> The value type is URI.</p>
<h5>Create TZURL</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createTzurl()</p>
<p class="label">Example</p>
<p class="example">$component->createTzurl();</p>
<h5>Delete TZURL</h5>
<p>Remove TZURL from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;TZURL&quot; )</p>
<p class="label">Example</p>
<p class="example">$vtimezone->deleteProperty( &quot;TZURL&quot; );</p>
<h5>Get TZURL</h5>
<p>If set, returns property value, otherwise FALSE.</p>.
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;TZURL&quot; )</p>
<p class="comment">output = tzurl<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;TZURL&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; tzurl<span class="ref">1</span>
              , &quot;params&quot; =&gt; xparams<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$tzurl = $timezonestandard->getProperty( &quot;TZURL&quot; );</p>
<h5>Set TZURL</h5>
<p>Insert property value.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;tzurl&quot;, tzurl [, xparams ] )</p>
<p class="comment">tzurl<span class="ref">1</span>   = (string) Value type URI
xparams<span class="ref">2</span> = array( *[ (string) xparamkey =&gt; (string) xparamvalue ] )</p>
<p class="label">Example</p>
<p class="example">$tz        = &quot;http://zones.stds_r_us.net/tz/US-Eastern&quot; );
$config    = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
$vtimezone = &amp; $vcalendar->newComponent( &quot;vtimezone&quot; );
$vtimezone->setProperty( &quot;Tzid&quot;, &quot;US-Eastern&quot; );
$vtimezone->setProperty( &quot;Last-Modified&quot;, &quot;19870101T000000&quot; );
$vtimezone->setProperty( &quot;tzurl&quot;, $tz );
.. .
.. .</p>
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<a name="UID"></a><h3>3.2.46 UID</h3>
<p>
The persistent, globally <b>U</b>nique <b>ID</b>entifier for the <strong>calendar</strong> component.
The property is OPTIONAL and MUST NOT occur more than once in <a href="#VEVENT">VEVENT</a>, <a href="#VTODO">VTODO</a>, <a href="#VJOURNAL">VJOURNAL</a> and <a href="#VFREEBUSY">VFREEBUSY</a> components.<br>
However, UID is <b>AUTOMATICALLY</b> generated in iCalcreator and configuration <a href="#Unique_id">unique_id</a>, is used when auto-creating component UID.
</p>
<p>UID generated format :</p>
<p class="format">date(&quot;Ymd\THisT&quot;).&quot;-&quot;.[microSec][random].&quot;@&quot;.<a href="#Unique_id">unique_id</a></p>
<p>
microSec = microseconds, 4 pos<br>
random    = 6 characters aA-zZ, 0-9
</p>
<p class="label">Example</p>
<p class="example">&quot;20070803T194810CEST-hide@address.com&quot;</p>
<p>
UID may be required when importing iCal files into some <strong>calendar</strong> software (MS etc.),
as well as (<strong>calendar</strong>) properties <a href="#X-PROPERTY">x-properties</a> "X-WR-CALNAME", "X-WR-CALDESC" and "X-WR-TIMEZONE",
<a href="#METHOD">METHOD</a> (value PUBLISH etc.) and the (also automatically created) <a href="#DTSTAMP">DTSTAMP</a> property.
</p>
<p>The value type for UID is TEXT.</p>
<h5>Create UID</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createUid()</p>
<p class="label">Example</p>
<p class="example">$component->createUid();</p>
<h5>Delete UID</h5>
<p>
If UID is remove from a component, UID will automatically be recreated when <strong>calendar</strong> output functions 
like <a href="#createCalendar">createCalendar</a>, <a href="#returnCalendar">returnCalendar</a> or <a href="#saveCalendar">saveCalendar</a> is executed.
</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;UID&quot; )</p>
<p class="label">Example</p>
<p class="example">$vevent->deleteProperty( &quot;UID&quot; );</p>
<h5>Get UID</h5>
<p>If set, returns property, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;UID&quot; )</p>
<p class="comment">output = uid<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;UID&quot;, FALSE , TRUE )</p>
<p class="comment">output = array( &quot;value&quot;  =&gt; uid<span class="ref">1</span>
              , &quot;params&quot; =&gt; xparams<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$uid = $vevent->getProperty( &quot;UID&quot; );</p>
<h5>Set UID</h5>
<p>Insert property value, overrides any previously set or auto-created UID.</p>
<p>
Do <b>NOT</b> use an integer UID or only a component name in UID (ex. &quot;vevent&quot;), 
this may cause malfunction in <a href="#setComponent">setComponent</a> with index or UID argument.
</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;uid&quot;, uid [, xparams ] )</p>
<p class="comment">uid<span class="ref">1</span>     = (string) Value type TEXT
xparams<span class="ref">2</span> = array( *[ (string) xparamkey =&gt; (string) xparamvalue ] )</p>
<p class="label">Example</p>
<p class="example">$vevent->setProperty(&quot;uid&quot;,&quot;20070803T194810CEST-hide@address.com&quot;);</p>
<br>
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<a name="URL"></a><h3>3.2.47 URL</h3>
<p>
This property defines a Uniform Resource Locator (URL) associated with the <strong>iCalendar</strong> object.
The property is OPTIONAL and MUST NOT occur more than once in <a href="#VEVENT">VEVENT</a>, 
<a href="#VTODO">VTODO</a>, <a href="#VJOURNAL">VJOURNAL</a> and <a href="#VFREEBUSY">VFREEBUSY</a> components.
</p>
<p> The value type is URI.</p>
<h5>Create URL</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createUrl()</p>
<p class="label">Example</p>
<p class="example">$component->createUrl();</p>
<h5>Delete URL</h5>
<p>Remove URL from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;URL&quot; )</p>
<p class="label">Example</p>
<p class="example">$vevent->deleteProperty( &quot;URL&quot; );</p>
<h5>Get URL</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;URL&quot; )</p>
<p class="comment">output = url<span class="ref">1</span></p>
<p class="label">Format 2</p>
<p class="format">getProperty( &quot;URL&quot;, FALSE , TRUE )</p>
<p class="comment">output = array &quot;value&quot;   =&gt; url<span class="ref">1</span>
              , &quot;params&quot; =&gt; xparams<span class="ref">2</span> )</p>
<p class="label">Example</p>
<p class="example">$url = $vevent->getProperty( &quot;URL&quot; );</p>
<h5>Set URL</h5>
<p>Insert property value.</p>
<p class="label">Format</p>
<p class="format">setProperty( &quot;url&quot;, url [, xparams ] )</p>
<p class="comment">url<span class="ref">1</span>     = (string) Value type URI
xparams<span class="ref">2</span> = (array) ( *[ (string) xparamkey =&gt; (string) xparamvalue ] (</p>
<p class="label">Example</p>
<p class="example">$vtodo->setProperty( &quot;url&quot;, &quot;http://www.icaldomain.net&quot; );</p>
<br>
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<a name="X-PROPERTY_PROP"></a><h3>3.2.48 X-PROPERTY</h3>
<p>
A component, non-standard property with a TEXT value and a name with an &quot;X-&quot; prefix. In a component,
an x-property, with an unique name, can occur only once but the number of x-properties are unlimited.
</p>
<p>The value type is TEXT.</p>
<h5>Create X-PROPERTY</h5>
<p>If set, returns rfc2445 formatted string, otherwise FALSE.</p>
<p class="label">Format</p>
<p class="format">createXprop()</p>
<p class="label">Example</p>
<p class="example">$component->createxProp();</p>
<h5>Delete X-PROPERTY</h5>
<p>Remove X-PROPERTY from component.</p>
<p class="label">Format</p>
<p class="format">deleteProperty( &quot;&lt;X-PROPERTY&gt;&quot; )</p>
<p class="label">Example 1</p>
<p>Deleting x-property named &quot;X-PROPERTY&quot;.</p>
<p class="example">$vevent->deleteProperty( &quot;X-PROPERTY&quot; );</p>
<p class="label">Example 2</p>
<p>Deleting all x-properties.</p>
<p class="example">while( $vevent->deleteProperty())
  continue;</p>
<h5>Get X-property</h5>
<p>If set, returns property value, otherwise FALSE.</p>
<p class="label">Format 1</p>
<p class="format">getProperty( &quot;&lt;X-PROPERTY&gt;&quot; )</p>
<p class="comment">output = array( propertyName<span class="ref">1</span>
              , propertyData<span class="ref">2</span> )</p>
<p class="label">Format 2</p>
<p class="format">getProperty()</p>
<p class="comment">output = array( propertyName<span class="ref">1</span>
              , propertyData<span class="ref">2</span> )</p>
<p class="label">Format 3</p>
<p class="format">getProperty( FALSE, propOrderNo/FALSE, TRUE )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">output = array( propertyName<span class="ref">1</span>
              , array ( &quot;value&quot;  =&gt; propertyData<span class="ref">2</span> )
                      , &quot;params&quot; =&gt; params<span class="ref">&nbsp;3</span>))</p>
<p class="label">Format 4</p>
<p class="format">getProperty( FALSE, propOrderNo )</p>
<p class="comment">propOrderNo = (int) specific property value</p>
<p class="comment">Get propOrderNo X-property</p>

<p class="label">Example 1</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;,
                 &quot;filename&quot;, &quot;file.ics&quot; ); );
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
if( FALSE !== ( $d = $vcalendar->getProperty( &quot;X-WR-TIMEZONE&quot; )))
   echo $d[1];
.. .</p>
<p class="comment"> // $xprop = array( propertyName<span class="ref">1</span>, propertyData<span class="ref">2</span> )</p>

<p class="label">Example 2</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;,
                 &quot;filename&quot;, &quot;file.ics&quot; ); );
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
while( $xprop = $vcalendar->getProperty( )) {
.. .</p>
<p class="comment"> // $xprop = array( propertyName<span class="ref">1</span>, propertyData<span class="ref">2</span> )</p>

<p class="label">Example 3</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;,
                 &quot;filename&quot;, &quot;file.ics&quot; ); );
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
while( $xprop = $vcalendar->getProperty( &quot;X-ABC-MMSUBJ&quot; )) {
.. .</p>
<p class="comment"> // $xprop = array( &quot;X-ABC-MMSUBJ&quot;, propertyData<span class="ref">2</span> )</p>
<p class="label">Example 4</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;,
                 &quot;filename&quot;, &quot;file.ics&quot; ); );
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
while( $xprop = $vcalendar->getProperty( FALSE, FALSE, TRUE )) {
.. .</p>
<p class="comment"> // $xprop = array( propertyName<span class="ref">1</span>
 //               , array( &quot;value&quot;  =&gt; propertyData<span class="ref">2</span> )
 //                      , &quot;params&quot; =&gt; params<span class="ref">&nbsp;3</span> )</p>
<h5>Set X-property</h5>
<p>Insert property name and value. If an x-prop with the same name already exists, it will be replaced.</p>
<p class="label">Format</p>
<p class="format">setProperty( propertyName, propertyData [, params ] )</p>
<p class="comment">propertyName<span class="ref">1</span> = (string) Any property name with a &quot;X-&quot; prefix
propertyData<span class="ref">2</span> = (string) Value type TEXT
params<span class="ref">3</span>       = (array) ( [&quot;LANGUAGE&quot; =&gt; (string) &quot;&lt;lang&gt;&quot;] [, xparams] )
xparams      = *[ (string) xparamkey =&gt; (string) xparamvalue ]</p>
<p class="label">Example</p>
<p class="example">$component->setProperty(&quot;X-ABC-MMSUBJ&quot;,&quot;http://load.noise.org/mysubj.wav&quot;);</p>
<br>
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<a NAME="Calendar_component_configuration_functions"></a><h2>3.3 Calendar Component configuration functions</h2>

<a name="Language_PROP"></a><h3>3.3.1 Language</h3>
Language for specific <strong>calendar</strong> component as defined in [RFC 1766].<br>
Language set at component level can be overridden by specific component property parameter.<br>
A successful &quot;setConfig&quot; returns TRUE.
<h5>Get language</h5>
Language for <strong>calendar</strong> (only if language is set at component level).
<p class="label">Format</p>
<p class="format">getConfig( &quot;language&quot; )</p>
<p class="label">Example</p>
<p class="example">$lang = $vevent->getConfig( &quot;language&quot; );</p>
<h5>Set LANGUAGE</h5>
<p class="label">Format</p>
<p class="format">setConfig( &quot;language&quot;, lang )</p>
<p class="comment">lang = (string) language</p>
<p class="label">Example</p>
<p class="example">$vevent->setConfig( &quot;language&quot;, &quot;en&quot; );</p>
<br>
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<a name="Calendar_component_object_misc_functions"></a><h2>3.4 Calendar component object misc. functions</h2>
Calendar component subcomponent functions

<a name="deleteComponent_PROP"></a><h4>3.4.1 deleteComponent</h4>
Remove subcomponent from component.
<p class="label">Format</p>
<p class="format">deleteComponent( orderNumber )</p>
<p class="comment">orderNumber = (int) component order Number</p>
<p class="comment">Remove component with order number (1st=1, 2nd=2.. .).</p>
<p class="format">deleteComponent( componentType [, componentSuborderNumber])</p>
<p class="comment">componentType = (string) component type
componentSuborderNumber = (int) component suborder number</p>
<p class="comment">Remove component with component type (ex. &quot;vevent&quot;)
and order 1 alt. suborder number.</p>
<p class="format">deleteComponent( <a href="#UID">UID</a> )</p>
<p class="comment">Remove component with <a href="#UID">UID</a>.
N.B <a href="#UID">UID</a> is NOT set for <a href="#VALARM">ALARM</a> / <a href="#VTIMEZONE">timezone</a> components.</p>
<p class="label">Example 1</p>
<p>Delete first subcomponent.</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;,
                 &quot;filename&quot;, &quot;file.ics&quot; ); );
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
$comp1 = $vcalendar->getComponent();
$comp1->deleteComponent( 1 );
.. .</p>
<p class="label">Example 2</p>
<p>Delete all subcomponents.</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;,
                 &quot;filename&quot;, &quot;file.ics&quot; ); );
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
$comp1 = $vcalendar->getComponent();
while( $comp1->deleteComponent( &quot;valarm&quot; )
  continue;
.. .</p>
<br>
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<a name="getComponent_PROP"></a><h4>3.4.2 getComponent</h4>
Get subComponent from component.
<p class="label">Format 1</p>
<p class="format">getComponent()</p>
<p class="comment">Get next component until end-of-components.</p>
<p class="label">Format 2</p>
<p class="format">getComponent( int orderNumber )</p>
<p class="comment">orderNumber = (int) component order number</p>
<p class="comment">Get component with order number (1st=1, 2nd=2.. .).</p>
<p class="label">Format 3</p>
<p class="format">getComponent( string componentType [, int componentSuborderNumber])</p>
<p class="comment">componentType = (string) component type
componentSuborderNumber = (int) component suborder number</p>
<p class="comment">Get (next) component with component type (until end-of-components)
alt. component with component type and suborder number (1st=1, 2nd=2..).</p>
<p class="label">Format 4</p>
<p class="format">getComponent( <a href="#UID">UID</a> )</p>
<p class="comment">Get component with <a href="#UID">UID</a>.
N.B <a href="#UID">UID</a> is NOT set for <a href="#VALARM">ALARM</a> / <a href="#VTIMEZONE">timezone</a> components.</p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot;,
                 &quot;filename&quot;, &quot;file.ics&quot; ); );
$vcalendar = new vcalendar( $config );
$vcalendar->parse();
$comp1 = $vcalendar->getComponent());
while( $subComp = $comp1->getComponent()) {
.. .</p>
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<a name="newComponent_PROP"></a><h4>3.4.3 newComponent</h4>
Create subcomponent (<a href="#VALARM">ALARN</a> / <a href="#VTIMEZONE">VTIMEZONE STANDARD</a> / <a href="#VTIMEZONE">VTIMEZONE DAYLIGHT</a>)
using a component factory-method, returning a reference to the new component.
<p class="label">Format</p>
<p class="format">newComponent( componentType )</p>
<p class="comment">componentType = (string) component type</p>
<p class="label">Example 1</p>
<p class="example">$config = array( &quot;unique_id&quot; => &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
...
$vevent = &amp; $vcalendar->newComponent( &quot;vevent&quot; );
$vevent->setProperty( &quot;dtstart&quot; // <span class="ref">add some <a href="#VEVENT">EVENT</a> properties</span>
                    , 2006, 12, 24, 19, 30, 00 );
$vevent->setProperty(.. .
...
$valarm = &amp; $vevent->newComponent( &quot;valarm&quot; );
$valarm->setProperty( &quot;trigger&quot;, .. .
...
</p>
<p class="label">Example 2</p>
<p class="example">$config = array( &quot;unique_id&quot; => &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config );
...
$vtimezone = &amp; $vcalendar->newComponent( &quot;vtimezone&quot; );
$vtimezone->setProperty(.. .
...
$standard = &amp; $vtimezone->newComponent( &quot;standard&quot; );
$standard->setProperty(.. .
...
$daylight = &amp; $vtimezone->newComponent( &quot;daylight&quot; );
$daylight->setProperty(.. .
...
</p>

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<a name="setComponent_PROP"></a><h4>3.4.4 setComponent</h4>
Add <strong>calendar</strong> component to <strong>calendar</strong> or replace/update component in <strong>calendar</strong>.
<p class="label">Format 1</p>
<p class="format">setComponent( component )
addSubComponent( component ) // <span class="ref">alias</span></p>
<p class="comment">Insert last in component chain.</p>
<p class="label">Format 2</p>
<p class="format">setComponent( component, int orderNumber )</p>
<p class="comment">orderNumber = (int) component order number</p>
<p class="comment">Replace component with order number(1st=1, 2nd=2.. .).
If orderNumber is not found, component is inserted last in chain.</p>
<p class="label">Format 3</p>
<p class="format">setComponent( component, componentType [,componentSuborderNumber])</p>
<p class="comment">componentType = (string) component type
componentSuborderNumber = (int) component suborder number</p>
<p class="comment">Replace component with component type and component order number.
if orderNumber is not found, component is inserted last in chain. </p>
<p class="label">Example</p>
<p class="example">$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot; );
$vcalendar = new vcalendar( $config ); // <span class="ref">initiate new CALENDAR</span>
.. .
$vevent = new vevent();
$vevent->setProperty( &quot;dtstart&quot; // <span class="ref">add some <a href="#VEVENT">EVENT</a> properties</span>
                    , 2006, 12, 24, 19, 30, 00 );
$vevent->setProperty(.. .
.. .
$valarm = new valarm();
$valarm->setProperty( &quot;trigger&quot;, .. .
.. .
$vevent->setComponent( $valarm );
$vcalendar->setComponent( $vevent );
.. .
</p>
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<a name="iCalUtilityFunctions"></a><h1>4. iCalUtilityFunctions</h1>
<p>
iCalUtilityFunctions class contains static functions used by iCalcreator,
also usable outside the iCalcreator class. Please examine the class to explore other functions.
</p>
<p>
<a name="createTimezone"></a><h4>4.1 createTimezone</h4>
<p>
The function, applied on a iCalcrator instance and using a <em>PHP</em> valid timezone (as argument)
creates <a href="#VTIMEZONE">vtimezone</a>, <a href="#standard">standard</a> and <a href="#daylight">daylight</a> components, 
based on <em>PHP</em> DateTimeZone class and the time zone transition dates.
(<em>PHP</em> 5 >= 5.2.0)
</p>
<p>
Recommendation is to call the function <b>after</b> editing components (and without period from/to arguments, below), it will automatically create timezone components to fit.
</p>
<p>
Note, only when timezone NOT is UTC.
For dates with UTC DATE-TIME, read <a href="#DATE_WITH_UTC_TIME">this</a>!
</p>
<p>
FALSE is returned if not using a <em>PHP</em> valid timezone.
</p>
<p class="label">Format</p>
<p class="format">createTimezone( calendar, timezone [, xprops, [, from [, to ]]] )</p>
<p class="comment">calendar = (object) iCalcreator instance
timezone = (string) an <em>PHP</em> (DateTimeZone) valid timezone
xprops   = (array) ( *[ x-propName =&gt; value ] ), timezone non-standard properties
from     = (int) timestamp, period start date
to       = (int) timestamp, period end date
           if the &quot;from&quot; and &quot;to&quot; arguments are missing,
             the calendar <a href="#getProperty2">getProperty</a> method (with DTSTART as argument)
             is used to get lowest and highest event dates 
             (modified - one month / + one year)
           if still missing,
             two timezone transitions are created, using current date 
             (modified - one month / + one year)
</p>
<p class="label">Example</p>
<p class="example">$tz     = &quot;Europe/Stockholm&quot;;
$config = array( &quot;unique_id&quot; =&gt; &quot;kigkonsult.se&quot; );
$c      = new vcalendar( $config );
$c->setProperty( "X-WR-TIMEZONE", $tz ); 
.. .
$xprops = array( &quot;X-LIC-LOCATION&quot; => $tz );
iCalUtilityFunctions::createTimezone( $c, $tz, $xprops );
.. .
</p>
<p>
Output (when using createCalendar or returnCalendar functions):<br>
<span class="ref">BEGIN:VTIMEZONE
TZID:Europe/Stockholm<br>
X-LIC-LOCATION:Europe/Stockholm<br>
BEGIN:STANDARD<br>
DTSTART:20111030T003000<br>
TZOFFSETFROM:+0200<br>
TZOFFSETTO:+0100<br>
TZNAME:CET<br>
END:STANDARD<br>
BEGIN:DAYLIGHT<br>
DTSTART:20110327T002000<br>
TZOFFSETFROM:+0100<br>
TZOFFSETTO:+0200<br>
TZNAME:CEST<br>
END:DAYLIGHT<br>
END:VTIMEZONE
</span>
</p>
<br>
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<a name="ms2phpTZ"></a><h4>4.2 ms2phpTZ</h4>
<p>
Conversion (very simple) of a MS timezone to a <em>PHP</em>5 valid (Date-)timezone,<br>
matching (MS) UTC offset and time zone descriptors, based on <em>PHP</em> DateTimeZone class.
(<em>PHP</em> 5 >= 5.2.0)
</p>
<p>If TRUE is returned, the MS timezone argument (below) is converted to a <em>PHP</em>5 time zone, otherwise unaltered.</p>
<p class="label">Format</p>
<p class="format">ms2phpTZ( timezone )</p>
<p class="comment">timezone = (string) MS timezone (input), PHP5 timezone (output)</p>
<p class="label">Example</p>
<p class="example">$search = '"(UTC-06:00) Central Time (US & Canada)"';
echo "MS  tz:'$search'&lt;br&gt;\n";
if( FALSE !== iCalUtilityFunctions::ms2phpTZ( $search ))
  echo "PHP tz:'$search'&lt;br&gt;\n";
</p>
<br>
<br>
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<a name="transformDateTime"></a><h4>4.3 transformDateTime</h4>
<p>Transforms a datetime from a time zone to another. (Requires <em>PHP</em> >= 5.2.0 and <em>PHP</em> DateTimeZone acceptable time zones).</p>
<p>
FALSE is returned if not using a &quot;strtotime&quot; acceptable datetime string or unacceptable <em>PHP</em> time zones.
If TRUE, the dateTime argument (below) is converted to the new time zone, otherwise unaltered.
</p>
<p class="label">Format</p>
<p class="format">transformDateTime( dateTime, timezoneFrom [, timezoneTo [, format ]] )</p>
<p class="comment">
dateTime     = (array) ( &quot;year&quot;  =&gt; (int) year            // <span class="ref">input</span>
                        , &quot;month&quot; =&gt; (int) month
                        , &quot;day&quot;   =&gt; (int) day
                       [, &quot;hour&quot;  =&gt; (int) hour
                        , &quot;min&quot;   =&gt; (int) min
                        , &quot;sec&quot;   =&gt; (int) sec ] )
dateTime     = (array) ( (int) year                       // <span class="ref">input</span>
                        , (int) month
                        , (int) day
                       [, (int) hour
                        , (int) min
                        , (int) sec ] )
dateTime     = (array) ( &quot;timestamp&quot; =&gt; (int) timestamp ) // <span class="ref">input</span>
dateTime     = (string) datetime string<span class="ref">*</span>                  // <span class="ref">input</span>
dateTime     = (string) datetime string                   // <span class="ref">on successful output</span>
timezoneFrom = (string) a <em>PHP</em> (DateTimeZone) valid time zone
timezoneTo   = (string) a <em>PHP</em> (DateTimeZone) valid time zone, default &quot;UTC&quot;
format       = (string) output format (any date formatting, default &quot;Ymd\THis&quot;)
<br>datetime string<span class="ref">*</span> recommended formats
    &quot;20110625&quot;,            &quot;2011-06-25&quot;,          &quot;2011/06/26&quot;
    &quot;20110625051015&quot;,      &quot;20110625 051015&quot;
    &quot;20110625T051015&quot;,     &quot;20110625t051015&quot;
    &quot;2011-06-25 05:10:15&quot;, &quot;2011-06-25T05:10:15&quot;, &quot;2011-06-25t05:10:15&quot;
    &quot;2011/06/25 05:10:15&quot;, &quot;2011/06/25T05:10:15&quot;, &quot;2011/06/25t05:10:15&quot;
    other string formats, acceptable by strtotime function, may (would) work
    <span class="ref">(notice <a href="#date_restriction">date restriction</a>)</span></p>
<p class="label">Example</p>
<p>Convert from time zone &quot;Europe/Stockholm&quot; to &quot;UTC&quot;</p>
<p class="example">
.. .
$d    = date( &quot;Y-m-d H:i:s&quot; );
$tzFr = &quot;Europe/Stockholm&quot;;
if( FALSE !== iCalUtilityFunctions::transformDateTime( $d, $tzFr ))
  $event->setProperty( &quot;dtstart&quot;, $d.&quot;Z&quot; );
else
  $event->setProperty( &quot;dtstart&quot;, $d, array( &quot;TZID&quot; => $tzFr ));
.. .<br>
</p>
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<a name="helperFunctions"></a><h1>5. Helper functions</h1>
<p>The helper functions extend the utility of iCalcreator.
</p>

<a name="iCal2XML"></a><h4>5.1 iCal2XML</h4>
<p>
The iCal2XML function converts an iCalcreator instance to XML format according to rfc6321, 
&quot;xCal: The XML Format for <strong>iCalendar</strong>&quot;.
</p>
<p>
Requires <em>PHP</em> 5 and &quot;libxml&quot; <em>PHP</em> extension (--enable-libxml) and utilizes the SimpleXML extension.
Before <em>PHP</em> 5.1.2, &quot;--enable-simplexml&quot; (at compile time) is required to enable this extension, after <em>PHP</em> 5.1.2 enabled by default.
</p>
<p>
An rfc6321 XML string is returned.
</p>
<p class="label">Format</p>
<p class="format">iCal2XML( iCalobj )</p>
<p class="comment">iCalobj = (object) iCalcreator instance</p>
<br>
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<a name="XML2iCal"></a><h4>5.2 XML2iCal</h4>
<p>
The XML2iCal function, with the two entry functions: XMLstr2iCal and XMLfile2iCal,
converts XML, according to rfc6321, &quot;xCal: The XML Format for <strong>iCalendar</strong>&quot; via an <em>PHP</em> SimpleXMLElement element to an iCalcreator instance.
</p>
<p>
Requires <em>PHP</em> 5 and &quot;libxml&quot; <em>PHP</em> extension (--enable-libxml) and utilizes the SimpleXML extension.
Before <em>PHP</em> 5.1.2, &quot;--enable-simplexml&quot; (at compile time) is required to enable this extension, after <em>PHP</em> 5.1.2 enabled by default.
</p>
<p>
On success, an iCalcreator instance is returned.
</p>
<p>
On XML parse error, FALSE is returned and error information (if any) are redirected to <em>PHP</em> error log.
</p>
<h5>XMLstr2iCal</h5>
The function accepts a well-formed (rfc6321) XML string as argument.
<p class="label">Format</p>
<p class="format">XMLstr2iCal( xmlstr [, config] )</p>
<p class="comment">xmlstr  = (string) rfc6321 XML
config  = (array) iCalcreator config array (opt)</p>
<h5>XMLfile2iCal</h5>
The function accepts a local or remote (rfc6321) XML file name, or a remote URI, as argument.
<p class="label">Format</p>
<p class="format">XMLfile2iCal( xmlfile [, config] )</p>
<p class="comment">xmlfile = (string) rfc6321 XML file name or resource
config  = (array) iCalcreator config array (opt)</p>
<h5>XML2iCal</h5>
<p class="label">Format</p>
<p class="format">XML2iCal( xmlobj [, config] )</p>
<p class="comment">xmlobj  = (object) SimpleXML element instance
config  = (array)  iCalcreator config array (opt)</p>
<br>

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<a name="TZhelpers"></a><h4>5.3 time zone helper functions</h4>
<p>
Additional functions to use with vtimezone components. 
</p>
<p>
The <a href="#getTimezonesAsDateArrays">getTimezonesAsDateArrays</a> function 
creates time zone transition information, based on vtimezone components contents in a iCalcreator calendar instance.
</p>
<p>
The <a href="#getTzOffsetForDate">getTzOffsetForDate</a> function returns UTC offset information for specific date (timestamp) based on output from <a href="#getTimezonesAsDateArrays">getTimezonesAsDateArrays</a> function.
</p>
<p>
Before calling the functions <a href="#getTzOffsetForDate">getTzOffsetForDate</a> and <a href="#getTimezonesAsDateArrays">getTimezonesAsDateArrays</a>, 
set time zone 'GMT' ('date_default_timezone_set')!
</p>

<a name="getTzOffsetForDate"></a><h5>5.3.1 getTzOffsetForDate</h5>
<p>
The <a href="#getTzOffsetForDate">getTzOffsetForDate</a> function returns UTC offset information for specific date (timezone) based on output from <a href="#getTimezonesAsDateArrays">getTimezonesAsDateArrays</a> function.
</p>
<p>
Before calling the function, set time zone 'GMT' ('date_default_timezone_set')!
</p>
<p>
Returns array, time zone data for specific date (timestamp) with keys for 
</p>
<ul>
<li>&quot;offsetHis&quot; (+/-Hi[s])
<li>&quot;offsetSec&quot;( UTC offset in seconds)
<li>&quot;tzname&quot; (standard/daylight time zone name)
</ul>
<p class="label">Format</p>
<p class="format">getTzOffsetForDate( timezonesarray, tzid, timestamp )</p>
<p class="comment">timezonesarray = (array)  output from getTimezonesAsDateArrays, below
tzid           = (string) time zone identifier
timestamp      = (mixed)  the date in question (timestamp)
                          or UTC datetime (array) ( &quot;year&quot;  =&gt; (int) year
                                                  , &quot;month&quot; =&gt; (int) month
                                                  , &quot;day&quot;   =&gt; (int) day
                                                  , &quot;hour&quot;  =&gt; (int) hour
                                                  , &quot;min&quot;   =&gt; (int) min
                                                  , &quot;sec&quot;   =&gt; (int) sec )</p>
<br>

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<a name="getTimezonesAsDateArrays"></a><h5>5.3.2 getTimezonesAsDateArrays</h5>
<p>
The function creates time zone transition information, 
based on vtimezone component contents in a iCalcreator calendar instance, 
using sub-function expandTimezoneDates.
</p>
<p>
Before calling the function, set time zone 'GMT' ('date_default_timezone_set')!
</p>
<p>
Returns an array containing time zone data from vtimezone standard/daylight instances (input to <a href="#getTzOffsetForDate">getTzOffsetForDate</a>, above).
</p>
<p class="label">Format</p>
<p class="format">getTimezonesAsDateArrays( iCalobj )</p>
<p class="comment">iCalobj= (object) iCalcreator calendar instance</p>
<br>

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<a name="Copyright_and_Licence"></a><h1>6. COPYRIGHT AND LICENSE</h1>

<a name="Copyright"></a><h4>6.1 Copyright</h4>
<p>
iCalcreator v2.12<br>
copyright (c) 2007-2012 Kjell-Inge Gustafsson, kigkonsult<br>
<a href="http://kigkonsult.se/iCalcreator/index.php" title="kigkonsult.se/iCalcreator" target="_blank">kigkonsult.se iCalcreator</a><br>
<a href="http://kigkonsult.se/contact/index.php" title="kigkonsult.se contact" target="_blank">kigkonsult.se contact</a>
</p>

<a name="Licence"></a><h4>6.2 License</h4>
<p>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
</p>
<p>
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.
</p>
<p>
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
or download it <a href="http://kigkonsult.se/downloads/dl.php?f=LGPL" target="_blank">here</a>.
</p>
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