php-doc-en/reference/array/functions/array-intersect-uassoc.xml
Hannes Magnusson c3bc936236 WS, preparation for the new doc style...
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2006-10-31 11:24:02 +00:00

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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.5 $ -->
<refentry id="function.array-intersect-uassoc">
<refnamediv>
<refname>array_intersect_uassoc</refname>
<refpurpose>Computes the intersection of arrays with additional index check, compares indexes by a callback function</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>array</type><methodname>array_intersect_uassoc</methodname>
<methodparam><type>array</type><parameter>array1</parameter></methodparam>
<methodparam><type>array</type><parameter>array2</parameter></methodparam>
<methodparam choice="opt"><type>array</type><parameter> ...</parameter></methodparam>
<methodparam><type>callback</type><parameter>key_compare_func</parameter></methodparam>
</methodsynopsis>
<para>
<function>array_intersect_uassoc</function> returns an array
containing all the values of <parameter>array1</parameter>
that are present in all the arguments. Note that the keys are used in
the comparison unlike in <function>array_intersect</function>.
</para>
<para>
The index comparison is done by a user supplied callback function.
It must return an integer less than, equal to, or greater than zero
if the first argument is considered to be respectively less than,
equal to, or greater than the second.
</para>
<para>
<example>
<title><function>array_intersect_uassoc</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
$array1 = array("a" => "green", "b" => "brown", "c" => "blue", "red");
$array2 = array("a" => "GREEN", "B" => "brown", "yellow", "red");
print_r(array_intersect_uassoc($array1, $array2, "strcasecmp"));
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
Array
(
[b] => brown
)
]]>
</screen>
</example>
</para>
<para>
See also <function>array_intersect</function>,
<function>array_intersect_assoc</function>,
<function>array_uintersect_assoc</function>,
<function>array_uintersect_uassoc</function>,
<function>array_intersect_key</function> and
<function>array_intersect_ukey</function>.
</para>
</refsect1>
</refentry>
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