Location: PHPKode > projects > PHPCrawl > PHPCrawl_080/documentation/classreferences/PHPCrawler/method_detail_tpl_method_setUrlCacheType.htm


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<html>
<head>
 <title>Method Details</title>
 <link rel="stylesheet" type="text/css" media="screen" href="style.css">
 
 <script name="javascript">
 
 function show_hide_examples(mode)
 {
   if (document.getElementById("examples").style.display == "none")
   {
     document.getElementById("examples").style.display = "";
   }
   else
   {
     document.getElementById("examples").style.display = "none";
   }
 }
 </script>
 
</head>

<body>

<div id="outer">

<h1 id="head">
  <span>Method: 
PHPCrawler::setUrlCacheType()</span>
</h1>

<h2 id="head">
 <span><a href="overview.html"><< Back to class-overview</a></span>
</h2>

<br>




<div id="section">

Defines what type of cache will be internally used for caching URLs.
</div>

<div id="section">
<b>Signature:</b>
<p id="signature">
  
public setUrlCacheType($url_cache_type)
</p>
</div>

<div id="section">
<b>Parameters:</b>
<p>
<table id="param_list">
  
<tr><td id="paramname" width="1%"><b>$url_cache_type</b>&nbsp;</td><td width="1%"><i><i>int</i></i>&nbsp;</td><td width="*">1 -&gt; in-memory-cache (default setting)<br>                           2 -&gt; SQlite-database-cache<br><br>                           Or one of the <a href="../PHPCrawlerUrlCacheTypes/overview.html" class="inline">PHPCrawlerUrlCacheTypes</a>::URLCACHE..-constants.</td></tr>
</table>
</p>
</div>

<div id="section">
<b>Returns:</b>
<p>
<table id="param_list">
  
<tr> <td width="1%"><i><i>bool</i></i>&nbsp;</td> <td width="*"></td></tr>
</table>
</p>
</div>

<div id="section">
<b>Description:</b>
<p>

  
Currently phpcrawl is able to use a in-memory-cache or a SQlite-database-cache for<br>caching/storing found URLs internally.<br><br>The memory-cache (<a href="../PHPCrawlerUrlCacheTypes/overview.html" class="inline">PHPCrawlerUrlCacheTypes</a>::URLCACHE_MEMORY) is recommended for spidering small to medium websites.<br>It provides better performance, but the php-memory-limit may be hit when too many URLs get added to the cache.<br>This is the default-setting.<br><br>The SQlite-cache (<a href="../PHPCrawlerUrlCacheTypes/overview.html" class="inline">PHPCrawlerUrlCacheTypes</a>::URLCACHE_SQLite) is recommended for spidering huge websites.<br>URLs get cached in a SQLite-database-file, so the cache only is limited by available harddisk-space.<br>To increase performance of the SQLite-cache you may set it's location to a shared-memory device like "/dev/shm/"<br>by using the <a href="method_detail_tpl_method_setWorkingDirectory.htm" class="inline">setWorkingDirectory()</a>-method.<br><br>Example:<code>$crawler-&gt;setUrlCacheType(PHPCrawlerUrlCacheTypes::URLCACHE_SQLITE);<br>$crawler-&gt;setWorkingDirectory("/dev/shm/");</code><br><br><b>NOTE:</b> When using phpcrawl in multi-process-mode (<a href="method_detail_tpl_method_goMultiProcessed.htm" class="inline">goMultiProcessed()</a>), the cache-type is automatically set<br>to PHPCrawlerUrlCacheTypes::URLCACHE_SQLITE.
  
</p>
</div>





</div>


<div id="footer">Docs created with <a href="http://phpclassview.cuab.de"  target="_parent">PhpClassView</a></div>
  
</body>
</html>
Return current item: PHPCrawl