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142 lines
3.2 KiB
XML
Executable File
142 lines
3.2 KiB
XML
Executable File
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<!-- EN-Revision: 8a7836bf884a89125227e59be5ece70dca724567 Maintainer: daijie Status: ready -->
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<!-- CREDITS: Luffy -->
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<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.array-flip">
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<refnamediv>
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<refname>array_flip</refname>
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<refpurpose>交换数组中的键和值</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>array</type><methodname>array_flip</methodname>
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<methodparam><type>array</type><parameter>array</parameter></methodparam>
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</methodsynopsis>
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<para>
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<function>array_flip</function> 返回一个反转后的 <type>array</type>，例如
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<parameter>array</parameter> 中的键名变成了值，而
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<parameter>array</parameter> 中的值成了键名。
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</para>
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<para>
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注意 <parameter>array</parameter> 中的值需要能够作为合法的键名（例如需要是
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<type>int</type> 或者 <type>string</type>）。如果类型不对，将出现一个警告，并且有问题的键／值对<emphasis>将不会出现在结果里</emphasis>。
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</para>
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<para>
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如果同一个值出现多次，则最后一个键名将作为它的值，其它键会被丢弃。
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</para>
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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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要交换键/值对的数组。
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</para>
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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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返回交换后的数组。
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</para>
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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>array_flip</function> 例子</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$input = array("oranges", "apples", "pears");
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$flipped = array_flip($input);
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print_r($flipped);
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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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[oranges] => 0
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[apples] => 1
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[pears] => 2
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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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<para>
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<example>
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<title><function>array_flip</function> 例子 : 冲突</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$input = array("a" => 1, "b" => 1, "c" => 2);
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$flipped = array_flip($input);
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print_r($flipped);
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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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[1] => b
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[2] => c
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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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<para>
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<simplelist>
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<member><function>array_values</function></member>
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<member><function>array_keys</function></member>
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<member><function>array_reverse</function></member>
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</simplelist>
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</para>
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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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