<html><body><form method="post" action="https://www.w3schools.com/php/%20echo%20$_SERVER['PHP_SELF'];"> Name: <input type="text" name="fname"> <input type="submit"></form>if ($_SERVER["REQUEST_METHOD"] == "POST") { // collect value of input field $name = $_POST['fname']; if (empty($name)) { echo "Name is empty"; } else { echo $name; }}</body><!-- Mirrored from www.w3schools.com/php/phptryit.asp?filename=tryphp_global_post by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:29:32 GMT --></html>