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xpath.xml
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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- EN-Revision: 770c6facae667218f69c8ea2715ea20f6fab32f3 Maintainer: takagi Status: ready -->
<!-- CREDITS: hirokawa,shimooka -->
<refentry xml:id="simplexmlelement.xpath" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>SimpleXMLElement::xpath</refname>
<refpurpose>XML データに Xpath クエリを実行する</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis role="SimpleXMLElement">
<modifier>public</modifier> <type class="union"><type>array</type><type>null</type><type>false</type></type><methodname>SimpleXMLElement::xpath</methodname>
<methodparam><type>string</type><parameter>expression</parameter></methodparam>
</methodsynopsis>
<para>
<literal>xpath</literal>メソッドは、
<acronym>XPath</acronym> <parameter>expression</parameter>にマッチする
SimpleXML ノードを検索します。
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>expression</parameter></term>
<listitem>
<para>
XPath パス。
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
SimpleXMLElement オブジェクトの <type>array</type> を返します。
エラーが発生した場合は &null; または &false; を返します。
</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);
/* <a><b><c> を探します */
$result = $xml->xpath('/a/b/c');
foreach ($result as $node) {
echo '/a/b/c: ',$node,"\n";
}
/* 相対パスでも動作します... */
$result = $xml->xpath('b/c');
foreach ($result as $node) {
echo 'b/c: ',$node,"\n";
}
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
/a/b/c: text
/a/b/c: stuff
b/c: text
b/c: stuff
]]>
</screen>
<simpara>
これら二つの結果は同じであることに注意してください。
</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>
<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
sgml-indent-data:t
indent-tabs-mode:nil
sgml-parent-document:nil
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->