(language construct, not string) to skip the check. // For example if you want to restrict the access with webserver. define('ADMIN_USERNAME', null); // Admin Password define('ADMIN_PASSWORD', 'memcache'); define('DATE_FORMAT', 'Y-m-d H:i:s'); define('GRAPH_SIZE', 200); define('MAX_ITEM_DUMP', 50); // add more as an array $MEMCACHE_SERVERS[] = 'localhost:11211';