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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.23 $ -->
<!-- splitted from ./en/functions/array.xml, last change in rev 1.2 -->
<refentry id="function.sort">
<refnamediv>
<refname>sort</refname>
<refpurpose>Sort an array</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>bool</type><methodname>sort</methodname>
<methodparam><type>array</type><parameter role="reference">array</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>sort_flags</parameter></methodparam>
</methodsynopsis>
<para>
This function sorts an array. Elements will be arranged from
lowest to highest when this function has completed.
</para>
¬e.no-key-association;
<para>
&return.success;
</para>
<para>
<example>
<title><function>sort</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
$fruits = array("lemon", "orange", "banana", "apple");
sort($fruits);
foreach ($fruits as $key => $val) {
echo "fruits[" . $key . "] = " . $val . "\n";
}
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
fruits[0] = apple
fruits[1] = banana
fruits[2] = lemon
fruits[3] = orange
]]>
</screen>
</example>
</para>
<para>
The fruits have been sorted in alphabetical order.
</para>
<para>
The optional second parameter <parameter>sort_flags</parameter>
may be used to modify the sorting behavior using these values:
</para>
<para>
Sorting type flags:
<itemizedlist>
<listitem>
<simpara><constant>SORT_REGULAR</constant> - compare items normally
(don't change types)</simpara>
</listitem>
<listitem>
<simpara><constant>SORT_NUMERIC</constant> - compare items numerically</simpara>
</listitem>
<listitem>
<simpara><constant>SORT_STRING</constant> - compare items as strings</simpara>
</listitem>
<listitem>
<simpara><constant>SORT_LOCALE_STRING</constant> - compare items as
strings, based on the current locale. Added in PHP 4.4.0 and 5.0.2.
Before PHP 6, it uses the system locale, which can be changed using
<function>setlocale</function>. Since PHP 6, you must use the
<function>i18n_loc_set_default</function> function.
</simpara>
</listitem>
</itemizedlist>
</para>
<note>
<para>
The second parameter was added in PHP 4.
</para>
</note>
<warning>
<simpara>
Be careful when sorting arrays with mixed types values because
<function>sort</function> can produce unpredictable results.
</simpara>
</warning>
<para>
See also <function>arsort</function>,
<function>asort</function>, <function>ksort</function>,
<function>krsort</function>,
<function>natsort</function>, <function>natcasesort</function>,
<function>rsort</function>, <function>usort</function>,
<function>array_multisort</function>, and
<function>uksort</function>.
</para>
</refsect1>
</refentry>
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