chamilo / chamilo-lms

            $sql .= " ORDER BY $column $direction";

        }

        if (!empty($start) && !empty($limit)) {

            $start = intval($start);

            $limit = intval($limit);

            $sql .= " LIMIT $start, $limit";

        }

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

        $users = array();

        );

    } else {

        $limitString = null;

        if (!empty($start) && !empty($limit)) {

            $start = intval($start);

            $limit = intval($limit);

            $limitString = " LIMIT $start, $limit";

        }

        $orderBy = null;