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  <refentry id="function.sort">
   <refnamediv>
    <refname>sort</refname>
    <refpurpose>Sort an array</refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
     <methodsynopsis>
      <type>void</type><methodname>sort</methodname>
      <methodparam><type>array</type><parameter>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.
     <example>
      <title><function>sort</function> example</title>
      <programlisting role="php">
<![CDATA[
<?php

$fruits = array ("lemon", "orange", "banana", "apple");
sort ($fruits);
reset ($fruits);
while (list ($key, $val) = each ($fruits)) {
    echo "fruits[".$key."] = ".$val."\n";
}

?>
]]>
      </programlisting>
     </example>
    </para>
    <para>
     This example would display:
    </para>
    <para>
     <screen>
<![CDATA[
fruits[0] = apple
fruits[1] = banana
fruits[2] = lemon
fruits[3] = orange
]]>
     </screen>
    </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>SORT_REGULAR - compare items normally</simpara>
      </listitem>
      <listitem>
       <simpara>SORT_NUMERIC - compare items numerically</simpara>
      </listitem>
      <listitem>
       <simpara>SORT_STRING - compare items as strings</simpara>
      </listitem>
     </itemizedlist>
    </para>
    <para>
     See also <function>arsort</function>,
     <function>asort</function>, <function>ksort</function>,
     <function>natsort</function>, <function>natcasesort</function>,
     <function>rsort</function>, <function>usort</function>,
     <function>array_multisort</function>, and
     <function>uksort</function>.
    </para>
    <note>
     <para>
      The second parameter was added in PHP 4.
     </para>
    </note>
   </refsect1>
  </refentry>

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