chamilo / chamilo-lms

            $coursecode = $eval->get_course_code();

            // evaluation in course

            if (isset($coursecode) && !empty($coursecode)) {

                if (!array_key_exists($coursecode, $coursecodes)) {

                    $coursecodes[$coursecode] = '1';

                    $users = array_merge($users, self::get_users_in_course($coursecode));

                }

            } else {

                // course independent evaluation

                $tbl_user = Database::get_main_table(TABLE_MAIN_USER);

        foreach ($links as $link) {

            // links are always in a course

            $coursecode = $link->get_course_code();

            if (!array_key_exists($coursecode, $coursecodes)) {

                $coursecodes[$coursecode] = '1';

                $users = array_merge($users, self::get_users_in_course($coursecode));

            }

        }

        return $users;