/** * @param string $which * * @return DB_Mysql */ public static function db($which = 'master') { $DB_config = Yaf_Registry::get('config')->get('yaf')->get('db')->{$which}; $cache_config = Yaf_Registry::get('config')->get('yaf')->get('cache'); $db = DB_Mysql::getInstance($DB_config, $cache_config); return $db; // return ($db instanceof DB_DbInterface) ? $db : false; }