<html><body>function myfunction($a,$b){if ($a===$b) { return 0; } return ($a>$b)?1:-1;}$a1=array("a"=>"red","b"=>"green","c"=>"blue","yellow");$a2=array("A"=>"red","b"=>"GREEN","yellow","black");$a3=array("a"=>"green","b"=>"red","yellow","black");$result=array_uintersect($a1,$a2,$a3,"myfunction");print_r($result);</body><!-- Mirrored from www.w3schools.com/php/phptryit.asp?filename=tryphp_func_array_uintersect2 by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:50:53 GMT --></html>