<html><body>if (!filter_has_var(INPUT_GET, "email")) { echo("Email not found");} else { echo("Email found");}</body><!-- Mirrored from www.w3schools.com/php/phptryit.asp?filename=tryphp_func_filter_has_var by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:51:02 GMT --></html>