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147 lines
3.8 KiB
XML
Executable File
147 lines
3.8 KiB
XML
Executable File
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<!-- EN-Revision: 8b00eb9807eb2aec3263226eb770a0885ebc804e Maintainer: HonestQiao Status: ready -->
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<!-- CREDITS: Luffy -->
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<refentry xml:id="function.array-keys" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>array_keys</refname>
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<refpurpose>返回数组中部分的或所有的键名</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis role="procedural"><type>array</type><methodname>array_keys</methodname>
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<methodparam><type>array</type><parameter>array</parameter></methodparam>
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</methodsynopsis>
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<methodsynopsis role="procedural">
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<type>array</type><methodname>array_keys</methodname>
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<methodparam><type>array</type><parameter>array</parameter></methodparam>
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<methodparam><type>mixed</type><parameter>search_value</parameter></methodparam>
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<methodparam choice="opt"><type>bool</type><parameter>strict</parameter><initializer>&false;</initializer></methodparam>
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</methodsynopsis>
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<para>
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<function>array_keys</function> 返回 <parameter>input</parameter>
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数组中的数字或者字符串的键名。
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</para>
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<para>
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如果指定了可选参数 <parameter>search_value</parameter>，则只返回该值的键名。否则
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<parameter>input</parameter> 数组中的所有键名都会被返回。
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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>input</parameter></term>
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<listitem>
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<para>
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一个数组，包含了要返回的键。
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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>search_value</parameter></term>
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<listitem>
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<para>
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如果指定了这个参数，只有包含此值的键才会返回。
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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>strict</parameter></term>
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<listitem>
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<para>
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判断在搜索的时候是否该使用严格的比较（===）。
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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 <parameter>input</parameter> 里的所有键。 </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_keys</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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$array = array(0 => 100, "color" => "red");
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print_r(array_keys($array));
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$array = array("blue", "red", "green", "blue", "blue");
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print_r(array_keys($array, "blue"));
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$array = array("color" => array("blue", "red", "green"),
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"size" => array("small", "medium", "large"));
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print_r(array_keys($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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[0] => 0
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[1] => color
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)
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Array
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(
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[0] => 0
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[1] => 3
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[2] => 4
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)
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Array
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(
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[0] => color
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[1] => size
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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_combine</function></member>
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<member><function>array_key_exists</function></member>
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<member><function>array_search</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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