<?php
            if ( isset ($_POST['submit'])) {
                if ( (!empty ($_POST['username'])) && (!empty ($_POST['password'])) ) {
                    if ($_POST['username'] == 'testing' && $_POST['password'] == 'testpass') {
                        print "Logged in as {$_POST['username']}";
                    } else {
                        print "You have the wrong username and/or password. Please fix this or stop trying to hack."
                    }
                 } else {
                print "I'm sorry but you have forgotten a field. Please fill the form out and try again.";
            } else {
                print '<form action="login.php" method="post">
                Username: <input type="text" name="username" size="20">
                Password: <input type="password" name="password" size"20">
                Confirm Password: <input type="confirm" name="confirm" size"20">
                Email: <input type="text" name="email" size"20">
                <input type="submit" name="submit" value "Log In!" />
                </form>';
                }
            ?>