Memcached Cache类

最近在学习TP，发现TP下只有memcache的缓存类没有memcached的，就加了一个
代码文件在这里
http://www.thinkphp.cn/extend/485.html

放到TP的Extend/Driver/Cache下，在config.php里配置'DATA_CACHE_TYPE' => 'Memcached',
// 'PERSISTENTID'=>'tp',//可选
'MEMCACHED_HOST' => array('127.0.0.1','127.0.0.1'),
'MEMCACHED_PORT' => array('11211','11212'),
// 'MEMECACHED_WEIGHT' => array(33,67),//可选使用：和其它缓存一样直接使用S方法就可以S('userName','wahaha',20);
        echo 'userName=='.S('userName');
        S('user1','wahaha-1',60);
        S('user2','wahaha-3',60);
        S('user3','wahaha-4',60);
        S('user5','wahaha-5',60);
        
        echo '
user1='.S('user1');
        echo '
user2='.S('user2');
        echo '
user3='.S('user3');
        echo '
user5='.S('user5');
        // 
        $memcached = new CacheMemcached();
        $data = array(
            'key1' => 'value1',
            'key2' => 'value2',
            'key3' => 'value3',
            );
        $memcached->setMulti($data,60);
        
        $key = array('key1','key2','key3');
        
        p($memcached->getMulti($key));
        
        $memcached->rm('key2');
        
        p($memcached->getMulti($key));
        
        $memcached->set('key88','value88',60);
        
        p($memcached->get('key88'));
        
        $memcached->clear();
        
        p($memcached->getMulti($key));

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