mirror of
https://github.com/php/doc-zh.git
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580b23e287
git-svn-id: https://svn.php.net/repository/phpdoc/zh/trunk@94824 c90b9560-bf6c-de11-be94-00142212c4b1
126 lines
3.1 KiB
XML
Executable File
126 lines
3.1 KiB
XML
Executable File
<?xml version="1.0" encoding="gb2312"?>
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<!-- $Revision: 1.1 $ -->
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<!-- $Author: dallas $ -->
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<!-- EN-Revision: 1.6 Maintainer: dallas Status: ready -->
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<refentry id="function.array-merge">
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<refnamediv>
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<refname>array_merge</refname>
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<refpurpose>合并两个或多个数组</refpurpose>
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</refnamediv>
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<refsect1>
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<title>说明</title>
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<methodsynopsis>
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<type>array</type><methodname>array_merge</methodname>
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<methodparam><type>array</type><parameter>array1</parameter></methodparam>
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<methodparam><type>array</type><parameter>array2</parameter></methodparam>
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<methodparam choice="opt"><type>array</type><parameter>...</parameter></methodparam>
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</methodsynopsis>
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<para>
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<function>array_merge</function> 将两个或多个数组的单元合并起来，一个数组中的值附加在前一个数组的后面。返回作为结果的数组。
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</para>
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<para>
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如果输入的数组中有相同的字符串键名，则该键名后面的值将覆盖前一个值。然而，如果数组包含数字键名，后面的值将<emphasis role="strong">不会</emphasis>覆盖原来的值，而是附加到后面。
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</para>
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<para>
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<example>
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<title><function>array_merge</function> 例子</title>
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<programlisting role="php">
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<![CDATA[
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$array1 = array ("color" => "red", 2, 4);
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$array2 = array ("a", "b", "color" => "green", "shape" => "trapezoid", 4);
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$result = array_merge ($array1, $array2);
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]]>
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</programlisting>
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<para>
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<literal>$result</literal> 成为：
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<screen role="php">
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<![CDATA[
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Array
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(
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[color] => green
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[0] => 2
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[1] => 4
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[2] => a
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[3] => b
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[shape] => trapezoid
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[4] => 4
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)
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]]>
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</screen>
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</para>
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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>简单的 <function>array_merge</function> 例子</title>
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<programlisting role="php">
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<![CDATA[
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$array1 = array();
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$array2 = array(1 => "data");
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$result = array_merge($array1, $array2);
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]]>
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</programlisting>
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<para>
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别忘了数字键名将会被重新编号！
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<screen role="php">
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<![CDATA[
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Array
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(
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[0] => data
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)
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]]>
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</screen>
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</para>
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<para>
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如果你想完全保留原有数组并只想新的数组附加到后面，用 <literal>+</literal> 运算符：
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<programlisting role="php">
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<![CDATA[
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$array1 = array();
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$array2 = array(1 => "data");
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$result = $array1 + $array2;
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]]>
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</programlisting>
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数字键名将被保留从而原来的关联保持不变。
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<screen role="php">
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<![CDATA[
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Array
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(
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[1] => data
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)
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]]>
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</screen>
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</para>
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</example>
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</para>
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<note>
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<para>
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共有的键名将根据先来先服务的原则被覆盖掉。
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</para>
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</note>
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<para>
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参见 <function>array_merge_recursive</function>。
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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:"../../../../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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