chamilo / chamilo-lms

            }

        }

        if (!empty($userIdList)) {

            $userIdList = array_map('intval', $userIdList);

            $userIdList = implode('","', $userIdList);

            $sql .= ' AND user.id IN ("' . $userIdList . '")';

        }

        if (isset($filterByActive)) {

            $filterByActive = intval($filterByActive);

    $groupId = intval($groupId);

    $studentCondition = null;

    if (!empty($onlyUserList)) {

        $onlyUserList = array_map('intval', $onlyUserList);

        $studentCondition = "AND u.user_id IN ('".implode("', '", $onlyUserList)."') ";

    } else {

        if (empty($userId)) {

            return 0;

        }

    }

    $groupIid = 0;

    if ($groupId) {

                    WHERE c_id = '.$courseId.' AND (session_id = 0 OR session_id IS NULL)';

        }

        if (!empty($id_list)) {

            $id_list = array_map('intval', $id_list);

            $sql .= " AND id IN (".implode(', ', $id_list).") ";

        }

        $db_result = Database::query($sql);

        if ($db_result) {