private static function _connectMemcache() { $memcacheHost = Watt_Config::getCfg("MEMCACHE_HOST"); $memcachePort = Watt_Config::getCfg("MEMCACHE_PORT"); if ($memcacheHost && $memcachePort) { $memcache = new Memcache(); if ($memcache->connect($memcacheHost, $memcachePort)) { self::$_memcache = $memcache; } } return self::$_memcache; }