if(isset($_POST['but_reg'])) {
                        $username = security($_POST['username']);
                        $password = security(md5($_POST['password']));
                        $passwordb = security(md5($_POST['passwordb']));
                        $email = security($_POST['email']);
                        $city = security($_POST['city']);
                        $sex = security($_POST['sex']);
                        $bdd = security($_POST['bdd']);
                        $bdm = security($_POST['bdm']);
                        $bdy = security($_POST['bdy']);