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https://github.com/sigmasternchen/php-doc-en
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88 lines
2.8 KiB
XML
88 lines
2.8 KiB
XML
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<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.1 $ -->
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<refentry id="function.array-intersect-assoc">
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<refnamediv>
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<refname>array_intersect_assoc</refname>
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<refpurpose>Computes the intersection of arrays with additional index check</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<methodsynopsis>
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<type>array</type><methodname>array_intersect_assoc</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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<simpara>
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<function>array_intersect_assoc</function> returns an array
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containing all the values of <parameter>array1</parameter>
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that are present in all the arguments. Note that the keys are used in
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the comparison unlike in <function>array_intersect</function>.
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</simpara>
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<para>
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<example>
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<title><function>array_intersect_assoc</function> example</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$array1 = array ("a" => "green", "b" => "brown", "c" => "blue", "red");
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$array2 = array ("a" => "green", "yellow", "red");
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$result_array = array_intersect_assoc ($array1, $array2);
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/* $result_array will look like:
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Array
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(
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[a] => green
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)
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*/
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?>
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]]>
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</programlisting>
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</example>
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</para>
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<simpara>
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In our example you see that only the pair <literal>"a" =>
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"green"</literal> is present in both arrays and thus is returned.
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The value <literal>"red"</literal> is not returned because in
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<varname>$array1</varname> it's key is <literal>2</literal> while
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the key of "red" in <varname>$array2</varname> it is
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<literal>1</literal>.
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</simpara>
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<simpara>
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The two values from the <literal>key => value</literal> pairs are
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considered equal only if
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<literal>(string) $elem1 === (string) $elem2 </literal>. In otherwords
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a strict type check is executed so the string representation must be
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the same.
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<!-- TODO: example of it... -->
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</simpara>
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<simpara>
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See also <function>array_diff</function> and
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<function>array_intersect</function>.
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</simpara>
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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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