php-doc-en/reference/array/functions/array-uintersect.xml
2004-07-27 04:48:55 +00:00

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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.2 $ -->
<refentry id="function.array-uintersect">
<refnamediv>
<refname>array_uintersect</refname>
<refpurpose>Computes the intersection of arrays. The data is compared by using a callback function</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>array</type><methodname>array_uintersect</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>data_compare_func</parameter></methodparam>
</methodsynopsis>
<para>
<function>array_uintersect</function> returns an array
containing all the values of <parameter>array1</parameter>
that are present in all the arguments.
The data is compared by using a callback function.
</para>
<para>
<example>
<title><function>array_uintersect</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
$array1 = array("a" => "green", "b" => "brown", "c" => "blue", "red");
$array2 = array("a" => "GREEN", "B" => "brown", "yellow", "red");
print_r(array_uintersect($array1, $array2, "strcasecmp"));
?>
]]>
</programlisting>
<para>
Result will look like:
</para>
<screen>
<![CDATA[
Array
(
[a] => green
[b] => brown
[0] => red
)
]]>
</screen>
</example>
</para>
<para>
For comparison is used the 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>
See also <function>array_intersect</function>,
<function>array_uintersect_assoc</function>,
<function>array_intersect_uassoc</function> and
<function>array_uintersect_uassoc</function>.
</para>
</refsect1>
</refentry>
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