<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.12 $ -->
<!-- splitted from ./en/functions/array.xml, last change in rev 1.14 -->
<refentry id="function.array-intersect">
 <refnamediv>
  <refname>array_intersect</refname>
  <refpurpose>Computes the intersection of arrays</refpurpose>
 </refnamediv>
 <refsect1>
  <title>Description</title>
  <methodsynopsis>
   <type>array</type><methodname>array_intersect</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>
  </methodsynopsis>
  <para>
   <function>array_intersect</function> returns an array
   containing all the values of <parameter>array1</parameter>
   that are present in all the arguments.
   Note that keys are preserved.
  </para>
  <para>
   <example>
    <title><function>array_intersect</function> example</title>
    <programlisting role="php">
<![CDATA[
<?php
$array1 = array("a" => "green", "red", "blue");
$array2 = array("b" => "green", "yellow", "red");
$result = array_intersect($array1, $array2);
print_r($result);
?>
]]>
    </programlisting>
    &example.outputs;
    <screen role="php">
<![CDATA[
Array
(
    [a] => green
    [0] => red
)
]]>
    </screen>
   </example>
  </para>
  <note>
   <simpara>
    Two elements are considered equal if and only if
    <literal>(string) $elem1 === (string) $elem2</literal>. In words:
    when the string representation is the same.
    <!-- TODO: example of it... -->
   </simpara>
  </note>
  <para>
   See also <function>array_intersect_assoc</function>,
   <function>array_diff</function>, and
   <function>array_diff_assoc</function>.
  </para>
 </refsect1>
</refentry>

<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
sgml-indent-data:t
indent-tabs-mode:nil
sgml-parent-document:nil
sgml-default-dtd-file:"../../../../manual.ced"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->