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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 298133 $ -->
<refentry xml:id='simplexmlelement.children' xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>SimpleXMLElement::children</refname>
<refpurpose>Finds children of given node</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<classsynopsis>
<ooclass><classname>SimpleXMLElement</classname></ooclass>
<methodsynopsis>
<type>SimpleXMLElement</type><methodname>children</methodname>
<methodparam choice="opt"><type>string</type><parameter>ns</parameter></methodparam>
<methodparam choice="opt"><type>bool</type><parameter>is_prefix</parameter><initializer>false</initializer></methodparam>
</methodsynopsis>
</classsynopsis>
<para>
This method finds the children of an element. The result follows normal
iteration rules.
</para>
&simplexml.iteration;
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>ns</parameter></term>
<listitem>
<para>
An <acronym>XML</acronym> namespace.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>is_prefix</parameter></term>
<listitem>
<para>
If <parameter>is_prefix</parameter> is &true;,
<parameter>ns</parameter> will be regarded as a prefix. If &false;,
<parameter>ns</parameter> will be regarded as a namespace
<acronym>URL</acronym>.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns a <classname>SimpleXMLElement</classname> element, whether the node
has children or not.
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<para>
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>5.2.0</entry>
<entry>
The optional parameter <parameter>is_prefix</parameter> was added.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>Traversing a <literal>children()</literal> pseudo-array</title>
<programlisting role="php">
<![CDATA[
<?php
$xml = new SimpleXMLElement(
'<person>
<child role="son">
<child role="daughter"/>
</child>
<child role="daughter">
<child role="son">
<child role="son"/>
</child>
</child>
</person>');
foreach ($xml->children() as $second_gen) {
echo ' The person begot a ' . $second_gen['role'];
foreach ($second_gen->children() as $third_gen) {
echo ' who begot a ' . $third_gen['role'] . ';';
foreach ($third_gen->children() as $fourth_gen) {
echo ' and that ' . $third_gen['role'] .
' begot a ' . $fourth_gen['role'];
}
}
}
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
The person begot a son who begot a daughter; The person
begot a daughter who begot a son; and that son begot a son
]]>
</screen>
</example>
<example>
<title>Using namespaces</title>
<programlisting role="php">
<![CDATA[
<?php
$xml = '<example xmlns:foo="my.foo.urn">
<foo:a>Apple</foo:a>
<foo:b>Banana</foo:b>
<c>Cherry</c>
</example>';
$sxe = new SimpleXMLElement($xml);
$kids = $sxe->children('foo');
var_dump(count($kids));
$kids = $sxe->children('foo', TRUE);
var_dump(count($kids));
$kids = $sxe->children('my.foo.urn');
var_dump(count($kids));
$kids = $sxe->children('my.foo.urn', TRUE);
var_dump(count($kids));
$kids = $sxe->children();
var_dump(count($kids));
?>
]]>
</programlisting>
<screen>
<![CDATA[
int(0)
int(2)
int(2)
int(0)
int(1)
]]>
</screen>
</example>
</para>
</refsect1>
<refsect1 role="notes">
&reftitle.notes;
<simpara>
<methodname>SimpleXMLElement::children</methodname> returns a node
object no matter if the current node has children or not. Use
<function>count</function> on the return value to see if there are any
children. As of PHP 5.3.0, <methodname>SimpleXMLElement::count</methodname>
may be used instead.
</simpara>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><methodname>SimpleXMLElement::count</methodname></member>
<member><function>count</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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sgml-parent-document:nil
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-->
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