$return_to_url->unset_get_variable('add_row');
             $return_to_url->set_get_variable('last_added_id', $id);
         }
         /*
          * Update the table.
          */
         if (isset($_GET['edit_id'])) {
             $xml_db_page_manager->update_by_id($table, $_GET['edit_id'], $_POST, $_FILES);
             $return_to_url->unset_get_variable('edit_id');
             $return_to_url->set_get_variable('last_edited_id', $_GET['edit_id']);
         }
         /*
          * Delete rows from the database.
          */
         if (isset($_GET['delete_id'])) {
             $xml_db_page_manager->delete_by_id($table, $_GET['delete_id']);
             $return_to_url->unset_get_variable('delete_id');
             $return_to_url->set_get_variable('last_deleted_id', $_GET['delete_id']);
         }
         if (isset($_GET['delete_all'])) {
             $xml_db_page_manager->delete_all($table);
             $return_to_url->unset_get_variable('delete_all');
             $return_to_url->set_get_variable('all_rows_deleted');
         }
     } catch (Exception $e) {
         $return_to_url->set_get_variable('error', urlencode($e->getMessage()));
     }
 }
 /*
  * Set the return to URL.
  */