<label><input name="captcha" type="text" placeholder="Please Enter Captcha Above" size="6"/> <span>Please Enter Captcha Above</span></label> <input type="submit" value="Sign Up" name="signup"/> </form></p> </div></body> <?php include 'authenticate.php'; if (isset($_POST['signup'])) { if (isset($_POST['captcha']) && $_POST['captcha'] != "" && $_SESSION['code'] == $_POST['captcha']) { $usrName = $_POST['username']; $paswrd = md5($_POST['password']); $email = $_POST['email']; $register = new Authenticate(); if (!filter_var($email, FILTER_VALIDATE_EMAIL)) { echo "Invalid email format"; } else { $register->Register($usrName, $paswrd, $email); mail('$email', 'Welcome to RANT FORUMS', 'Hello' . $usrName . ',/nWelcome to Rant Forum where you can rant about anything that come to your mind with picture and words.'); } } else { echo "Captcha was wrong"; } }