if ($hasil['tingkat'] == '1') {
              $_SESSION['user_type'] = 'admin';
              $_SESSION['username'] = $username;
              echo "<script>window.location.href = 'admin/index.php';</script>";
            } elseif ($hasil['tingkat'] == '2') {
              $_SESSION['kdGuru'] = $username;
              $_SESSION['user_type'] = 'guru';
              echo "<script>window.location.href = 'user/guru/dashboard.php';</script>";
            } elseif ($hasil['tingkat'] == '3') {
              $_SESSION['nis'] = $username;
              $_SESSION['user_type'] = 'siswa';
              echo "<script>window.location.href = 'user/siswa/page-profil.php?n=" . addslashes($username) . "';</script>";
            }