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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.9 $ -->
<refentry id='function.dom-domcharacterdata-substringdata'>
<refnamediv>
<refname>DOMCharacterData->substringData()</refname>
<refpurpose>
Extracts a range of data from the node
</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<classsynopsis>
<ooclass><classname>DOMCharacterData</classname></ooclass>
<methodsynopsis>
<type>string</type><methodname>substringData</methodname>
<methodparam><type>int</type><parameter>offset</parameter></methodparam>
<methodparam><type>int</type><parameter>count</parameter></methodparam>
</methodsynopsis>
</classsynopsis>
<para>
Returns the specified substring.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>offset</parameter></term>
<listitem>
<para>
Start offset of substring to extract.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>count</parameter></term>
<listitem>
<para>
The number of characters to extract.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
The specified substring. If the sum of <parameter>offset</parameter>
and <parameter>count</parameter> exceeds the length, then all 16-bit units
to the end of the data are returned.
</para>
</refsect1>
<refsect1 role="errors">
&reftitle.errors;
<para>
<variablelist>
<varlistentry>
<term><constant>DOM_INDEX_SIZE_ERR</constant></term>
<listitem>
<para>
Raised if <parameter>offset</parameter> is negative or greater than the
number of 16-bit units in data, or if <parameter>count</parameter> is
negative.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><xref linkend="function.dom-domcharacterdata-appenddata" /></member>
<member><xref linkend="function.dom-domcharacterdata-deletedata" /></member>
<member><xref linkend="function.dom-domcharacterdata-insertdata" /></member>
<member><xref linkend="function.dom-domcharacterdata-replacedata" /></member>
</simplelist>
</para>
</refsect1>
</refentry>
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