add memcachedproxy stub class

Author: yjqg6666

stub-class.php

@@ -141,7 +141,7 @@ public function valid()
 endif;
 
 
-if (class_exists("PDO")):
+if (class_exists("Redis")):
     class redisProxy extends Redis
     {
         /**
@@ -196,3 +196,13 @@ public function done()
         }
     }
 endif;
+
+
+if (class_exists("Memcached")):
+    /**
+     * Class memcachedProxy
+     */
+    class memcachedProxy extends Memcached
+    {
+    }
+endif;