chamilo / chamilo-lms

        $result = false;

        $count = UrlManager::relation_url_session_exist($session_id, $url_id);

        $session_id	= intval($session_id);

        if (empty($count) && !empty($session_id)) {

            $url_id = intval($url_id);

            $sql = "INSERT INTO $table_url_rel_session

                    SET session_id = ".intval($session_id).", access_url_id = ".intval($url_id);

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

        }

        return $result;

    }

    {

        $table_url_rel_user = Database :: get_main_table(TABLE_MAIN_ACCESS_URL_REL_USER);

        $result = true;

        if (!empty($user_id) && !empty($url_id)) {

            $sql= "DELETE FROM $table_url_rel_user

                   WHERE user_id = ".intval($user_id)." AND access_url_id = ".intval($url_id);

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

        }

        return $result;

    }