<html><body><form method="get" action="https://www.w3schools.com/php/%20echo%20htmlspecialchars($_SERVER["PHP_SELF"]);"> E-mail: <input type="text" name="email"><input type="submit" name="submit" value="Submit"> </form>if (isset($_GET["email"])) { if (!filter_input(INPUT_GET, "email", FILTER_VALIDATE_EMAIL) === false) { echo("Email is valid"); } else { echo("Email is not valid"); }}</body><!-- Mirrored from www.w3schools.com/php/phptryit.asp?filename=tryphp_func_filter_input by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:51:02 GMT --></html>