$SQL = $pdo->query("SELECT rank FROM users");
        $Grade = $SQL->fetch();

        if ($Grade == 13) {

            $_SESSION['flash']['success'] = "Vous êtes administrateur";
            $_SESSION['admin'] = $user;
            header('Location: ../admin/index.php');


        }if ($Grade == 1) {

            $_SESSION['flash']['success'] = "Vous êtes Staff";
            $_SESSION['staff'] = $user;
            header('Location: ../staff/index.php');


        }if ($Grade == 0) {

            $_SESSION['auth'] = $user;
            header('Location: account.php');

        }