Memcached存储如何调用

做开发的时候用到了缓存，而在做缓存配置的时候发现现在原来关于store文件配置的说明文档在WorkerMan 3.x 手册没有了（ http://doc.workerman.net/start/store_config.html ），找到了一篇之前关于Memcached调用的文章（ http://wenda.workerman.net/?/question/69 ）却发现按照这样的配置无法调用，报错信息为：

/*------------------------------------------------------------------------------------------------------------------------------
Fatal error: Uncaught Error: Class 'Store' not found in C:\wamp64\www\workerman-
todpole-for-win-master\Applications\Timer\Events.php:82
Stack trace:
#0 : Events::onWorkerStart(Object(GatewayWorker\BusinessWorke
r))
#1 C:\wamp64\www\workerman-todpole-for-win-master\GatewayWorker\BusinessWorker.p
hp(195): call_user_func('Events::onWorke...', Object(GatewayWorker\BusinessWorke
r))
#2 : GatewayWorker\BusinessWorker->onWorkerStart(Object(Gatew
ayWorker\BusinessWorker))
#3 C:\wamp64\www\workerman-todpole-for-win-master\Workerman\Worker.php(741): cal
l_user_func(Array, Object(GatewayWorker\BusinessWorker))
#4 C:\wamp64\www\workerman-todpole-for-win-master\GatewayWorker\BusinessWorker.p
hp(174): Workerman\Worker->run()
#5 C:\wamp64\www\workerman-todpole-for-win-master\Workerman\Worker.php(433): Gat
ewayWorker\BusinessWorker->run()
--------------------------------------------------------------------------------------------------------------------------------*/

而后来我又换了一种方式，直接初始化缓存对象的方式来调用

/*------------------------------------------------------------
//创建memcache对象
$mem = new Memcache;

//连接memcache服务器
$mem -> connect("localhost", 11211);
 ------------------------------------------------------------*/
结果出现了同样的报错，无法找到Memcached
/*-------------------------------------------------------------------------------------------------------------------------------

Fatal error: Uncaught Error: Class 'Memcache' not found in C:\wamp64\www\workerm
an-todpole-for-win-master\Applications\Timer\Events.php:85
Stack trace:
#0 : Events::onWorkerStart(Object(GatewayWorker\BusinessWorke
r))
#1 C:\wamp64\www\workerman-todpole-for-win-master\GatewayWorker\BusinessWorker.p
hp(195): call_user_func('Events::onWorke...', Object(GatewayWorker\BusinessWorke
r))
#2 : GatewayWorker\BusinessWorker->onWorkerStart(Object(Gatew
ayWorker\BusinessWorker))
#3 C:\wamp64\www\workerman-todpole-for-win-master\Workerman\Worker.php(741): cal
l_user_func(Array, Object(GatewayWorker\BusinessWorker))
#4 C:\wamp64\www\workerman-todpole-for-win-master\GatewayWorker\BusinessWorker.p
hp(174): Workerman\Worker->run()
-----------------------------------------------------------------------------------------------------------------------------*/

想问两个问题：
1.如何正确调用Memcached

如何直接使用php提供的原生的memcache接口
还望worker大大给解答一下
（运行环境：WIN7 64 已安装Memcached扩展且用PHPdemo运行成功。）