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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://docbook.org/ns/docbook" xml:id="function.strnatcasecmp">
<refnamediv>
<refname>strnatcasecmp</refname>
<refpurpose>Case insensitive string comparisons using a "natural order" algorithm</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>int</type><methodname>strnatcasecmp</methodname>
<methodparam><type>string</type><parameter>string1</parameter></methodparam>
<methodparam><type>string</type><parameter>string2</parameter></methodparam>
</methodsynopsis>
<para>
This function implements a comparison algorithm that orders alphanumeric
strings in the way a human being would. The behaviour of this function is
similar to <function>strnatcmp</function>, except that the comparison is
not case sensitive. For more information see: Martin Pool's <link
xlink:href="&url.strnatcmp;">Natural Order String Comparison</link> page.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>string1</parameter></term>
<listitem>
<para>
The first string.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>string2</parameter></term>
<listitem>
<para>
The second string.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
&strings.comparison.return;
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
&standard.changelog.binary-safe-string-comparison;
</tbody>
</tgroup>
</informaltable>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>strnatcasecmp</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
var_dump(strnatcasecmp('Apple', 'Banana'));
var_dump(strnatcasecmp('Banana', 'Apple'));
var_dump(strnatcasecmp('apple', 'Apple'));
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
int(-1)
int(1)
int(0)
]]>
</screen>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>preg_match</function></member>
<member><function>strcmp</function></member>
<member><function>strcasecmp</function></member>
<member><function>substr</function></member>
<member><function>stristr</function></member>
<member><function>strncasecmp</function></member>
<member><function>strncmp</function></member>
<member><function>strstr</function></member>
<member><function>setlocale</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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