get(self::session_key($PHPSESSID));			if($out===false || $out == null)				return '';			return $out;		}		public static function write($PHPSESSID, $data){						$method=$data ? 'set' : 'replace';			return self::$handler->$method(self::session_key($PHPSESSID), $data, MEMCACHE_COMPRESSED, self::$lifetime);		}		public static function destroy($PHPSESSID){			return self::$handler->delete(self::session_key($PHPSESSID));		}		public static function gc($lifetime){			return true;		}		private static function session_key($PHPSESSID){			$session_key=self::NS.$PHPSESSID;			return $session_key;		}		}	$memcache=new Memcache;	$memcache->connect("localhost", 11211) or die("could not connect!");	MemSession::start($memcache);