<?php
/**
* SQL Solution's MySQL specific code
*
* @package SQLSolution
* @author Daniel Convissor <hide@address.com>
* @copyright The Analysis and Solutions Company, 2001-2011
* @license http://www.analysisandsolutions.com/software/license.htm Simple Public License
* @link http://www.analysisandsolutions.com/software/sql/sql.htm
* @see SQLSolution/General.php
*/
/**
* SQL Solution's MySQL specific methods
*
* @package SQLSolution
* @author Daniel Convissor <hide@address.com>
* @copyright The Analysis and Solutions Company, 2001-2011
* @license http://www.analysisandsolutions.com/software/license.htm Simple Public License
* @link http://www.analysisandsolutions.com/software/sql/sql.htm
*/
class SQLSolution_MySQLSpecifics extends SQLSolution_Customizations {
/**
* The database handle connection resource
* @var resource
*/
public $SQLDbHandle;
/*
* C O N N E C T I O N S E C T I O N
*/
/**
* Establishes a connection to the database server
*
* @return void
*
* @uses SQLSolution_MySQLUser for the authentication information
* @link http://www.SqlSolution.info/sql-man.htm#Connect
*/
public function Connect($FileName, $FileLine) {
ini_set('track_errors', 1);
$php_errormsg = '';
$this->SQLConnection = @mysql_connect(
$this->SQLHost,
$this->SQLUser,
$this->SQLPassword,
$this->SQLNewLink,
$this->SQLClientFlags
) or die ($this->KillQuery($FileName, $FileLine, $php_errormsg));
}
/**
* Establishes a persistent connection to the database server
*
* @return void
*
* @uses SQLSolution_MySQLUser for the authentication information
* @link http://www.SqlSolution.info/sql-man.htm#PersistentConnect
*/
public function PersistentConnect($FileName, $FileLine) {
ini_set('track_errors', 1);
$php_errormsg = '';
$this->SQLConnection = @mysql_pconnect(
$this->SQLHost,
$this->SQLUser,
$this->SQLPassword,
$this->SQLClientFlags
) or die ($this->KillQuery($FileName, $FileLine, $php_errormsg));
}
/**
* Opens a particular database, also connects to server if not done yet
*
* @return void
* @link http://www.SqlSolution.info/sql-man.htm#ObtainHandle
*/
public function ObtainHandle($FileName, $FileLine) {
if (!$this->CheckConnection()) {
$this->Connect($FileName, $FileLine);
}
$this->SQLDbHandle = @mysql_select_db($this->SQLDbName,
$this->SQLConnection)
or die ($this->KillQuery($FileName, $FileLine,
'Could not select database. '
. 'Invalid database name or connection ID.'));
}
/**
* Closes the current database server connection
*
* @return void
*
* @link http://www.SqlSolution.info/sql-man.htm#Disconnect
*/
public function Disconnect($FileName, $FileLine) {
if ($this->CheckConnection()) {
@mysql_close($this->SQLConnection);
}
$this->SQLConnection = null;
$this->SQLDbHandle = null;
}
/**
* Determines if a database connection exists
*
* @return bool does a connection exist?
*
* @since Method available since release 7.0
*/
public function CheckConnection() {
if (is_resource($this->SQLConnection)
&& strpos(get_resource_type($this->SQLConnection), 'mysql link') !== false)
{
return true;
} else {
return false;
}
}
/**
* Determines if a database handle exists
* @return bool does a handle exist?
* @since Method available since release 7.0
*/
public function CheckHandle() {
return (bool) $this->SQLDbHandle;
}
/*
* Q U E R Y S E C T I O N
*/
/**
* Executes $this->SQLQueryString
*
* Creates a database connection if one doesn't exist yet.
*
* @return void
* @link http://www.SqlSolution.info/sql-man.htm#RunQuery
*/
public function RunQuery($FileName, $FileLine) {
if (empty($this->SQLQueryString)) {
$this->KillQuery($FileName, $FileLine, 'Must set SQLQueryString first');
}
if (!$this->CheckConnection()) {
$this->Connect($FileName, $FileLine);
}
if (!$this->CheckHandle()) {
$this->ObtainHandle($FileName, $FileLine);
}
$php_errormsg = '';
$this->SQLRecordSetFieldCount = 0;
$this->SQLRecordSetRowCount = 0;
$this->SQLRecordSet = @mysql_query($this->SQLQueryString,
$this->SQLConnection);
if (is_resource($this->SQLRecordSet)) {
if (!$this->SQLRecordSetFieldCount =
@mysql_num_fields($this->SQLRecordSet))
{
$this->SQLRecordSetFieldCount = 0;
}
if (!$this->SQLRecordSetRowCount =
@mysql_num_rows($this->SQLRecordSet))
{
$this->SQLRecordSetRowCount = 0;
}
} elseif ($this->SQLRecordSet === true) {
return;
} elseif ($php_errormsg == '') {
// Probably a database error.
$this->KillQuery($FileName, $FileLine,
@mysql_error($this->SQLConnection));
} else {
// Some PHP error. Probably a bad Connection. Complain.
$this->KillQuery($FileName, $FileLine, $php_errormsg);
}
}
/**
* Executes $this->SQLQueryString and ensures the insert did not create
* duplicate records
*
* Creates a database connection if one doesn't exist yet.
*
* @return mixed 1 if the insert went well, null if not
*
* @link http://www.SqlSolution.info/sql-man.htm#RunQuery_NoDuplicates
*/
public function RunQuery_NoDuplicates($FileName, $FileLine) {
if (empty($this->SQLQueryString)) {
$this->KillQuery($FileName, $FileLine, 'Must set SQLQueryString first');
}
if (!$this->CheckConnection()) {
$this->Connect($FileName, $FileLine);
}
if (!$this->CheckHandle()) {
$this->ObtainHandle($FileName, $FileLine);
}
$php_errormsg = '';
$this->SQLRecordSetFieldCount = 0;
$this->SQLRecordSetRowCount = 0;
$this->SQLRecordSet = @mysql_query($this->SQLQueryString,
$this->SQLConnection);
if ($this->SQLRecordSet) {
return 1;
} elseif ($php_errormsg == '') {
switch (@mysql_errno($this->SQLConnection)) {
case 1022:
case 1062:
// Couldn't insert/update record due to duplicate key.
break;
default:
// Some other database error. Trap it.
$this->KillQuery($FileName, $FileLine,
@mysql_error($this->SQLConnection));
}
} else {
$this->KillQuery($FileName, $FileLine, $php_errormsg);
}
}
/**
* Frees the current query result
*
* @return void
*
* @link http://www.SqlSolution.info/sql-man.htm#ReleaseRecordSet
*/
public function ReleaseRecordSet($FileName, $FileLine) {
@mysql_free_result($this->SQLRecordSet);
$this->SQLRecordSet = null;
}
/*
* F I E L D D E F I N I T I O N S S E C T I O N
*/
/**
* Returns the name of the column at the specified offset in the current
* result set
*
* @return string the column's name
*
* @link http://www.SqlSolution.info/sql-man.htm#FieldName
*/
public function FieldName($FileName, $FileLine, $FieldNumber) {
$php_errormsg = '';
$Output = @mysql_field_name($this->SQLRecordSet, $FieldNumber);
if ($Output) {
return $Output;
} else {
$this->KillQuery($FileName, $FileLine, $php_errormsg);
}
}
/**
* Returns the data type of the column at the specified offset in the
* current result set
*
* @return string the column's data type
*
* @link http://www.SqlSolution.info/sql-man.htm#FieldType
*/
public function FieldType($FileName, $FileLine, $FieldNumber) {
$php_errormsg = '';
$Output = @mysql_field_type($this->SQLRecordSet, $FieldNumber);
if ($Output) {
return $Output;
} else {
$this->KillQuery($FileName, $FileLine, $php_errormsg);
}
}
/**
* Returns the size of the column at the specified offset in the
* current result set
*
* @return string the column's size
*
* @link http://www.SqlSolution.info/sql-man.htm#FieldLength
*/
public function FieldLength($FileName, $FileLine, $FieldNumber) {
$php_errormsg = '';
$Output = @mysql_field_len($this->SQLRecordSet, $FieldNumber);
if ($Output) {
return $Output;
} else {
$this->KillQuery($FileName, $FileLine, $php_errormsg);
}
}
/*
* R E C O R D D A T A S E C T I O N
*/
/**
* Places the next record's data into an associative array
*
* @param array $SkipSafeMarkup an array of field names to not parse
* safe markup on
*
* @return array an associative array containing the record's data
*
* @link http://www.SqlSolution.info/sql-man.htm#RecordAsAssocArray
*/
public function RecordAsAssocArray($FileName, $FileLine, $SkipSafeMarkup = array()) {
if (!is_resource($this->SQLRecordSet)) {
return null;
}
$php_errormsg = '';
$Row = @mysql_fetch_array($this->SQLRecordSet, MYSQL_ASSOC);
if ($Row) {
return $this->processRow($Row, $SkipSafeMarkup);
} elseif ($php_errormsg != '') {
$this->KillQuery($FileName, $FileLine, $php_errormsg);
}
}
/**
* Places the next record's data into an enumerated array
*
* @param array $SkipSafeMarkup an array of field numbers (starting at 0)
* to not parse safe markup on
*
* @return array an enumerated array containing the record's data
*
* @link http://www.SqlSolution.info/sql-man.htm#RecordAsEnumArray
*/
public function RecordAsEnumArray($FileName, $FileLine, $SkipSafeMarkup = array()) {
if (!is_resource($this->SQLRecordSet)) {
return null;
}
$php_errormsg = '';
$Row = @mysql_fetch_array($this->SQLRecordSet, MYSQL_NUM);
if ($Row) {
return $this->processRow($Row, $SkipSafeMarkup);
} elseif ($php_errormsg != '') {
$this->KillQuery($FileName, $FileLine, $php_errormsg);
}
}
/**
* Returns the auto increment ID from the last record inserted
*
* @return int the insert id
*
* @link http://www.SqlSolution.info/sql-man.htm#InsertID
*/
public function InsertID($FileName, $FileLine, $Table = '', $Field = '',
$Where = '', $Sequence = '')
{
$php_errormsg = '';
$Output = @mysql_insert_id($this->SQLConnection);
if ($Output) {
return $Output;
} elseif ($php_errormsg == '') {
$this->KillQuery($FileName, $FileLine, 'No auto_increment id. '
. 'This query does not generate one or this table does '
. 'not have one.');
} else {
$this->KillQuery($FileName, $FileLine, $php_errormsg);
}
}
/**
* Moves the internal pointer to the specified row in a result set
*
* @return void
* @link http://www.SqlSolution.info/sql-man.htm#GoToRecord
*/
public function GoToRecord($FileName, $FileLine, $Row = 0) {
@mysql_data_seek($this->SQLRecordSet, $Row);
}
/**
* Makes input safe for use as a value in queries
*
* Surrounds the string with quote marks. If the value is NULL, change it
* to the unquoted string "NULL".
*
* @param mixed $Value the value to be escaped
*
* @return string the escaped string
*/
public function Escape($FileName, $FileLine, $Value) {
if (!$this->CheckConnection()) {
$this->Connect($FileName, $FileLine);
}
if (!$this->CheckHandle()) {
$this->ObtainHandle($FileName, $FileLine);
}
if ($Value === null) {
return 'NULL';
} else {
return "'" . mysql_real_escape_string($Value, $this->SQLConnection) . "'";
}
}
}