public function register() { //check if data in post if filled if (CheckDataController::checkArrayData($_POST)) { $email = $_POST['email']; $first_name = $_POST['name']; $last_name = $_POST['lastname']; $age = $_POST['age']; $gender = $_POST['gender']; $pass = $_POST['pass']; $pass_check = $_POST['checkpass']; if (CheckDataController::checkEmail($email)) { if (CheckDataController::checkNotNumeric($first_name)) { if (CheckDataController::checkNotNumeric($last_name)) { if (CheckDataController::checkNumeric($age)) { if ($pass == $pass_check) { $pass = Encryption::setPassword($pass); $user = new Users(); return "data : email = {$email} " . $user->set($email, $first_name, $last_name, $pass, $gender); } } } } } } else { return "Something not filled in"; } return "Some Error"; }