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<refnamediv>

<refname>strnatcmp</refname>

<refpurpose>Comparación de strings con el algoritmo de "orden natural"</refpurpose>

</refnamediv>

<refsect1 role="description">

&reftitle.description;

<methodsynopsis>

<type>int</type><methodname>strnatcmp</methodname>

<methodparam><type>string</type><parameter>string1</parameter></methodparam>

<methodparam><type>string</type><parameter>string2</parameter></methodparam>

</methodsynopsis>

<para>

Implementa el algoritmo de comparación que ordena los strings como lo haría un ser humano. Tenga en cuenta que esta comparación distingue entre mayúsculas y minúsculas.

</para>

</refsect1>

<refsect1 role="parameters">

&reftitle.parameters;

<para>

<variablelist>

<varlistentry>

<term><parameter>string1</parameter></term>

<listitem>

<para>

El primer string.

</para>

</listitem>

</varlistentry>

<varlistentry>

<term><parameter>string2</parameter></term>

<listitem>

<para>

El segundo 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>

Un ejemplo de la diferencia de tratamiento con el algoritmo estándar se presenta a continuación:

<example>

<title><function>strcmp</function></title>

<programlisting role="php">

<![CDATA[

<?php

$arr1 = $arr2 = array("img12.png", "img10.png", "img2.png", "img1.png");

echo "Ordenación de strings estándar\n";

usort($arr1, "strcmp");

print_r($arr1);

echo "\nOrdenación de strings \"orden natural\"\n";

usort($arr2, "strnatcmp");

print_r($arr2);

?>

]]>

</programlisting>

&example.outputs;

<screen>

<![CDATA[

Ordenación de strings estándar

Array

(

[0] => img1.png

[1] => img10.png

[2] => img12.png

[3] => img2.png

)

Ordenación de strings "orden natural"

Array

(

[0] => img1.png

[1] => img2.png

[2] => img10.png

[3] => img12.png

)

]]>

</screen>

</example>

Para más detalles, consulte

<link xlink:href="&url.strnatcmp;"><literal>Natural Order String

Comparison</literal></link> de Martin Pool (en inglés).

</para>

</refsect1>

<refsect1 role="seealso">

&reftitle.seealso;

<para>

<simplelist>

<member><function>preg_match</function></member>

<member><function>strcasecmp</function></member>

<member><function>substr</function></member>

<member><function>stristr</function></member>

<member><function>strcmp</function></member>

<member><function>strncmp</function></member>

<member><function>strncasecmp</function></member>

<member><function>strnatcasecmp</function></member>

<member><function>strstr</function></member>

<member><function>natsort</function></member>

<member><function>natcasesort</function></member>

</simplelist>

</para>

</refsect1>

</refentry>

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