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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 311775 $ -->
<refentry xml:id="simplexmlelement.xpath" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>SimpleXMLElement::xpath</refname>
<refpurpose>Runs XPath query on XML data</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<modifier>public</modifier> <type>array</type><methodname>SimpleXMLElement::xpath</methodname>
<methodparam><type>string</type><parameter>path</parameter></methodparam>
</methodsynopsis>
<para>
The <literal>xpath</literal> method searches the SimpleXML node for
children matching the <acronym>XPath</acronym> <parameter>path</parameter>.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>path</parameter></term>
<listitem>
<para>
An XPath path
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns an <type>array</type> of SimpleXMLElement objects or &false; in
case of an error.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>Xpath</title>
<programlisting role="php">
<![CDATA[
<?php
$string = <<<XML
<a>
<b>
<c>text</c>
<c>stuff</c>
</b>
<d>
<c>code</c>
</d>
</a>
XML;
$xml = new SimpleXMLElement($string);
/* Search for <a><b><c> */
$result = $xml->xpath('/a/b/c');
while(list( , $node) = each($result)) {
echo '/a/b/c: ',$node,"\n";
}
/* Relative paths also work... */
$result = $xml->xpath('b/c');
while(list( , $node) = each($result)) {
echo 'b/c: ',$node,"\n";
}
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
/a/b/c: text
/a/b/c: stuff
b/c: text
b/c: stuff
]]>
</screen>
<simpara>
Notice that the two results are equal.
</simpara>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><methodname>SimpleXMLElement::registerXPathNamespace</methodname></member>
<member><methodname>SimpleXMLElement::getDocNamespaces</methodname></member>
<member><methodname>SimpleXMLElement::getNamespaces</methodname></member>
<member><xref linkend="simplexml.examples-basic"/></member>
</simplelist>
</para>
</refsect1>
</refentry>
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