<html><body>$a1=array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow");$a2=array("e"=>"red","f"=>"black","g"=>"purple");$a3=array("a"=>"red","b"=>"black","h"=>"yellow");$result=array_diff($a1,$a2,$a3);print_r($result);</body><!-- Mirrored from www.w3schools.com/php/phptryit.asp?filename=tryphp_func_array_diff2 by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:50:52 GMT --></html>