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162 lines
3.4 KiB
XML
Executable File
162 lines
3.4 KiB
XML
Executable File
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<!-- EN-Revision: 2226ad08fd93e3979efbba47c5ae3545eec97d25 Maintainer: HonestQiao Status: ready -->
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<!-- CREDITS: mowangjuanzi -->
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<refentry xml:id="function.uasort" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>uasort</refname>
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<refpurpose>使用用户定义的比较函数对数组进行排序并保持索引关联</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>true</type><methodname>uasort</methodname>
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<methodparam><type>array</type><parameter role="reference">array</parameter></methodparam>
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<methodparam><type>callable</type><parameter>callback</parameter></methodparam>
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</methodsynopsis>
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<para>
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本函数对 <parameter>array</parameter> 本身排序并保持索引和单元之间的关联。
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</para>
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<para>
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主要用于对那些单元顺序很重要的结合数组进行排序。比较函数是用户自定义的。
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</para>
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¬e.sort-unstable;
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¬e.reset-index;
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>array</parameter></term>
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<listitem>
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<para>
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输入的数组。
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>callback</parameter></term>
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<listitem>
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&sort.callback.description;
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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&return.true.always;
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</para>
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</refsect1>
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<refsect1 role="changelog">
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&reftitle.changelog;
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<informaltable>
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<tgroup cols="2">
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<thead>
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<row>
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<entry>&Version;</entry>
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<entry>&Description;</entry>
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</row>
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</thead>
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<tbody>
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&return.type.true;
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&array.changelog.by-ref;
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</tbody>
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</tgroup>
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</informaltable>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<para>
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<example>
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<title><function>uasort</function> 的基本示例</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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// 比较函数
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function cmp($a, $b) {
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if ($a == $b) {
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return 0;
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}
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return ($a < $b) ? -1 : 1;
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}
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// 要排序的数组
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$array = array('a' => 4, 'b' => 8, 'c' => -1, 'd' => -9, 'e' => 2, 'f' => 5, 'g' => 3, 'h' => -4);
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print_r($array);
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// 排序并打印排序后的数组
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uasort($array, 'cmp');
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print_r($array);
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?>
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]]>
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</programlisting>
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&example.outputs;
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<screen>
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<![CDATA[
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Array
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(
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[a] => 4
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[b] => 8
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[c] => -1
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[d] => -9
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[e] => 2
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[f] => 5
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[g] => 3
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[h] => -4
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)
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Array
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(
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[d] => -9
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[h] => -4
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[c] => -1
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[e] => 2
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[g] => 3
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[a] => 4
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[f] => 5
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[b] => 8
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)
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]]>
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</screen>
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</example>
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</para>
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<simplelist>
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<member><function>usort</function></member>
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<member><function>uksort</function></member>
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<member>&seealso.array.sorting;</member>
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</simplelist>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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