<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="arrayiterator.uksort" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>ArrayIterator::uksort</refname>
  <refpurpose>Sort by keys using a user-defined comparison function</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis role="ArrayIterator">
   <modifier>public</modifier> <type>true</type><methodname>ArrayIterator::uksort</methodname>
   <methodparam><type>callable</type><parameter>callback</parameter></methodparam>
  </methodsynopsis>
  <para>
   This method sorts the elements by keys using a user-supplied comparison
   function.
  </para>
  &note.sort-unstable;
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>callback</parameter></term>
     <listitem>
      &sort.callback.description;
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   &return.true.always;
  </para>
 </refsect1>

 <refsect1 role="changelog">
  &reftitle.changelog;
  <para>
   <informaltable>
    <tgroup cols="2">
     <thead>
      <row>
       <entry>&Version;</entry>
       <entry>&Description;</entry>
      </row>
     </thead>
     <tbody>
      &return.type.true;
     </tbody>
    </tgroup>
   </informaltable>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><methodname>ArrayIterator::asort</methodname></member>
    <member><methodname>ArrayIterator::ksort</methodname></member>
    <member><methodname>ArrayIterator::natcasesort</methodname></member>
    <member><methodname>ArrayIterator::natsort</methodname></member>
    <member><methodname>ArrayIterator::uksort</methodname></member>
    <member><function>uksort</function></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>
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