$group['category'] = $_POST['group_0_category'];
                }
                GroupManager::create_group($group['name'], $group['category'], $group['tutor'], $group['places']);
            }
            $msg = urlencode(count($groups) . ' ' . get_lang('GroupsAdded'));
            header('Location: group.php?action=show_msg&msg=' . $msg);
            exit;
            break;
        case 'create_virtual_groups':
            $ids = GroupManager::create_groups_from_virtual_courses();
            $msg = urlencode(count($ids) . ' ' . get_lang('GroupsAdded'));
            header('Location: group.php?action=show_msg&msg=' . $msg);
            exit;
            break;
        case 'create_subgroups':
            GroupManager::create_subgroups($_POST['base_group'], $_POST['number_of_groups']);
            $msg = urlencode($_POST['number_of_groups'] . ' ' . get_lang('GroupsAdded'));
            header('Location: group.php?action=show_msg&msg=' . $msg);
            exit;
            break;
        case 'create_class_groups':
            $ids = GroupManager::create_class_groups($_POST['group_category']);
            $msg = urlencode(count($ids) . ' ' . get_lang('GroupsAdded'));
            header('Location: group.php?action=show_msg&msg=' . $msg);
            exit;
            break;
    }
}
$nameTools = get_lang('GroupCreation');
$interbreadcrumb[] = array('url' => 'group.php', 'name' => get_lang('Groups'));
Display::display_header($nameTools, 'Group');