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169 lines
3.8 KiB
XML
Executable File
169 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: cd943f94a013b74df8765ab8e1a620a916a64a85 Maintainer: HonestQiao Status: ready -->
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<refentry xml:id="function.array-chunk" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>array_chunk</refname>
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<refpurpose>将一个数组分割成多个</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_chunk</methodname>
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<methodparam><type>array</type><parameter>array</parameter></methodparam>
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<methodparam><type>int</type><parameter>length</parameter></methodparam>
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<methodparam choice="opt"><type>bool</type><parameter>preserve_keys</parameter><initializer>&false;</initializer></methodparam>
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</methodsynopsis>
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<para>
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将一个数组分割成多个数组，其中每个数组的单元数目由
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<parameter>length</parameter> 决定。最后一个数组的单元数目可能会少于 <parameter>length</parameter> 个。
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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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需要操作的数组
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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>length</parameter></term>
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<listitem>
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<para>
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每个数组的单元数目
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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>preserve_keys</parameter></term>
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<listitem>
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<para>
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设为 &true;，可以使 PHP
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保留输入数组中原来的键名。如果你指定了 &false;，那每个结果数组将用从零开始的新数字索引。默认值是 &false;。
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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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得到的数组是一个多维数组中的单元，其索引从零开始，每一维包含了 <parameter>length</parameter> 个元素。
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</para>
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</refsect1>
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<refsect1 role="errors">
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&reftitle.errors;
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<para>
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如果 <parameter>length</parameter> 小于 1，会抛出一个
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<constant>E_WARNING</constant> 错误并返回 &null;。
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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_chunk</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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$input_array = array('a', 'b', 'c', 'd', 'e');
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print_r(array_chunk($input_array, 2));
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print_r(array_chunk($input_array, 2, true));
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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] => Array
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(
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[0] => a
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[1] => b
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)
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[1] => Array
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(
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[0] => c
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[1] => d
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)
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[2] => Array
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(
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[0] => e
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)
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)
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Array
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(
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[0] => Array
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(
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[0] => a
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[1] => b
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)
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[1] => Array
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(
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[2] => c
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[3] => d
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)
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[2] => Array
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(
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[4] => e
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)
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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_slice</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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