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KOSEKI Kengo 2226ad08fd Restore type juggling caution for return value of user comparison callback (#2368)
Create an XML sort.callback.description entity which contains the description of this parameter with the caution

Co-authored-by: George Peter Banyard <girgias@php.net>
2023-03-23 13:08:38 +00:00

133 lines
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XML

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="arrayobject.uksort" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>ArrayObject::uksort</refname>
<refpurpose>Sort the entries by keys using a user-defined comparison function</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis role="ArrayObject">
<modifier>public</modifier> <type>true</type><methodname>ArrayObject::uksort</methodname>
<methodparam><type>callable</type><parameter>callback</parameter></methodparam>
</methodsynopsis>
<para>
This function sorts the keys of the entries using a user-supplied
comparison function. The key to entry correlations will be maintained.
</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="examples">
&reftitle.examples;
<para>
<example>
<title><function>ArrayObject::uksort</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
function cmp($a, $b) {
$a = preg_replace('@^(a|an|the) @', '', $a);
$b = preg_replace('@^(a|an|the) @', '', $b);
return strcasecmp($a, $b);
}
$array = array("John" => 1, "the Earth" => 2, "an apple" => 3, "a banana" => 4);
$arrayObject = new ArrayObject($array);
$arrayObject->uksort('cmp');
foreach ($arrayObject as $key => $value) {
echo "$key: $value\n";
}
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
an apple: 3
a banana: 4
the Earth: 2
John: 1
]]>
</screen>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><methodname>ArrayObject::asort</methodname></member>
<member><methodname>ArrayObject::ksort</methodname></member>
<member><methodname>ArrayObject::natsort</methodname></member>
<member><methodname>ArrayObject::natcasesort</methodname></member>
<member><methodname>ArrayObject::uasort</methodname></member>
<member><function>uksort</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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