<html><body>$x = array("a" => "red", "b" => "green"); $y = array("c" => "blue", "d" => "yellow"); print_r($x + $y); // union of $x and $y </body><!-- Mirrored from www.w3schools.com/php/phptryit.asp?filename=tryphp_oper_arr_union by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:29:31 GMT --></html>