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<refentry xml:id="function.array-intersect-assoc" xmlns="http://docbook.org/ns/docbook">

<refnamediv> <refname>array_intersect_assoc</refname>

<refpurpose>带索引检查计算数组的交集</refpurpose>

</refnamediv>

<refsect1 role="description">

&reftitle.description;

<methodsynopsis>

<type>array</type><methodname>array_intersect_assoc</methodname>

<methodparam><type>array</type><parameter>array</parameter></methodparam>

<methodparam rep="repeat"><type>array</type><parameter>arrays</parameter></methodparam>

</methodsynopsis>

<simpara>

<function>array_intersect_assoc</function> 返回一个数组，该数组包含了所有在

<parameter>array</parameter> 和其它参数数组中同时存在的值。注意和

<function>array_intersect</function> 不同的是，键名也用于比较。

</simpara>

</refsect1>

<refsect1 role="parameters">

&reftitle.parameters;

<para>

<variablelist>

<varlistentry>

<term><parameter>array</parameter></term>

<listitem>

<para>

要检查的数组，作为主值。

</para>

</listitem>

</varlistentry>

<varlistentry>

<term><parameter>arrays</parameter></term>

<listitem>

<para>

要被对比的数组。

</para>

</listitem>

</varlistentry>

</variablelist>

</para>

</refsect1>

<refsect1 role="returnvalues">

&reftitle.returnvalues;

<para>

返回一个关联数组，该数组包含了所有在

<parameter>array</parameter> 和其它参数数组中同时存在的值。

</para>

</refsect1>

<refsect1 role="changelog">

&reftitle.changelog;

<para>

<informaltable>

<tgroup cols="2">

<thead>

<row>

<entry>&Version;</entry>

<entry>&Description;</entry>

</row>

</thead>

<tbody>

&array.changelog.require-only-one;

</tbody>

</tgroup>

</informaltable>

</para>

</refsect1>

<refsect1 role="examples">

&reftitle.examples;

<para>

<example>

<title><function>array_intersect_assoc</function> 例子</title>

<programlisting role="php">

<![CDATA[

<?php

$array1 = array("a" => "green", "b" => "brown", "c" => "blue", "red");

$array2 = array("a" => "green", "b" => "yellow", "blue", "red");

$result_array = array_intersect_assoc($array1, $array2);

print_r($result_array);

?>

]]>

</programlisting>

&example.outputs;

<screen>

<![CDATA[

Array

(

[a] => green

)

]]>

</screen>

</example>

</para>

<simpara>

上面例子中可以看到，只有键值对 <literal>"a" =&gt;

"green"</literal> 在两个数组中都存在，从而被返回。

值 <literal>"red"</literal> 没有被返回，是因为在

<varname>$array1</varname> 中它的键名是 <literal>0</literal>

而在 <varname>$array2</varname> 中 "red" 的键名是

<literal>1</literal>，键 <literal>"b"</literal> 没有返回的原因是，它的值和其他数组不同。

</simpara>

<simpara>

仅在 <literal>(string) $elem1 === (string) $elem2 </literal> 时，

<literal>key =&gt; value</literal> 才被认为是相等的。

也就是说使用了严格的类型检查，字符串的表达形式必须相同。

<!-- TODO: example of it... -->

</simpara>

</refsect1>

<refsect1 role="seealso">

&reftitle.seealso;

<simplelist>

<member><function>array_intersect</function></member>

<member><function>array_uintersect_assoc</function></member>

<member><function>array_intersect_uassoc</function></member>

<member><function>array_uintersect_uassoc</function></member>

<member><function>array_diff</function></member>

<member><function>array_diff_assoc</function></member>

</simplelist>

</refsect1>

</refentry>

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