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PHPCrawler::initChildProcess()</title>
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<h1 id="head">
  <span>Method: 
PHPCrawler::initChildProcess()</span>
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 <span><a href="overview.html"><< Back to class-overview</a></span>
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Overridable method that will be called by every used child-process just before it starts the crawling-procedure.
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<b>Signature:</b>
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public initChildProcess()
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<b>Parameters:</b>
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<tr><td><i>No parameter-descriptions available.</i></td></td>
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<b>Returns:</b>
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<tr><td><i>No information</i></td></tr>
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<b>Description:</b>
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Every child-process of the crawler will call this method just before it starts it's crawling-loop from within it's<br>process-context.<br><br>So when using the multi-process mode "<a href="../PHPCrawlerMultiProcessModes/constant_detail_tpl_constant_MPMODE_CHILDS_EXECUTES_USERCODE.htm" class="inline">PHPCrawlerMultiProcessModes::MPMODE_CHILDS_EXECUTES_USERCODE</a>", this method<br>should be overidden and used to open any needed database-connections, file streams or other similar handles to ensure<br>that they will get opened and accessible for every used child-process.<br><br>Example:<code>class MyCrawler extends PHPCrawler <br>{<br>&nbsp; protected $mysql_link;<br><br>&nbsp; function initChildProcess()<br>&nbsp; {<br>&nbsp; &nbsp; // Open a database-connection for every used process<br>&nbsp; &nbsp; $this-&gt;mysql_link = mysql_connect("myhost", "myusername", "mypassword");<br>&nbsp; &nbsp; mysql_select_db ("mydatabasename", $this-&gt;mysql_link);<br>&nbsp; }<br><br>&nbsp; function handleDocumentInfo($PageInfo) <br>&nbsp; {<br>&nbsp; &nbsp; mysql_query("INSERT INTO urls SET url = '".$PageInfo-&gt;url."';", $this-&gt;mysql_link);<br>&nbsp; }<br>}<br><br>// Start crawler with 5 processes<br>$crawler = new MyCrawler();<br>$crawler-&gt;setURL("http://www.any-url.com");<br>$crawler-&gt;goMultiProcessed(5, PHPCrawlerMultiProcessModes::MPMODE_CHILDS_EXECUTES_USERCODE);</code>
  
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