Mega Code Archive
Intersecting two arrays that have no duplicate keys, all the keys will be retained
$arr1 = array("Paul"=>25, "Ildiko"=>38, "Nick"=>27);
$arr2 = array("Ildiko"=>27, "Paul"=>38);
print "\nIntersect:\n";
var_dump(array_intersect($arr1, $arr2));
?>