-$connection->prepare_query($sql_pquery);
-$connection->prepared_query_bind_param("isis", array($form_nb_place, $form_class_name, $client_id, $form_flight_id));
-$connection->run_prepared_query();
-$connection->close_prepared_query();
-echo "Modifications enregistrées. <br>";
-redirect("index.php?page=reservations", 3);
+ $connection->prepare_query($sql_pquery);
+ $connection->prepared_query_bind_param("isis", array($form_nb_place, $form_class_name, $client_id, $form_flight_id));
+ $connection->run_prepared_query();
+ $connection->close_prepared_query();
+ echo "Modifications enregistrées. <br>";
+ redirect("index.php?page=reservations", 3);
+} else {
+ echo "Make an error message. <br>";
+ echo "<a href=\"javascript:history.go(-1)\">Retour</a>";
+}
+