内存缓存 检测加强

core/class/memory/memory_driver_memcache.php

@@ -20,10 +20,19 @@ class memory_driver_memcache
 				$connect = @$this->obj->connect($config['server'], $config['port']);
 			}
 			
-			$this->enable = $connect ? true : false;
+			$this->enable = $this->checkEnable($connect);
 		}
 	}
-	
+	 public function checkEnable($connect){
+		if($connect){
+			$this->set('_check_','_check_',10);
+			if($this->get('_check_')=='_check_'){
+				return true;
+			}
+			$this->rm('_check_');
+		}
+		return false;
+	}
 	public function get($key) {
 		return $this->obj->get($key);
 	}

core/class/memory/memory_driver_memcached.php

@@ -12,9 +12,22 @@ class memory_driver_memcached
 	public function init($config) {
 		if(!empty($config['server'])) {
 			$this->obj = new Memcached();
+			
 			$connect = $this->connectd($config['server'], $config['port']);
-			$this->enable = $connect ? true : false;
+			$this->enable=$this->checkEnable($connect);
 		}
+		
+		
+	}
+	 public function checkEnable($connect){
+		if($connect){
+			$this->set('_check_','_check_',10);
+			if($this->get('_check_')=='_check_'){
+				return true;
+			}
+			$this->rm('_check_');
+		}
+		return false;
 	}
 	 public function connectd($host , $port){ 
 		$servers = $this->obj->getServerList(); 

core/class/memory/memory_driver_redis.php

@@ -18,7 +18,7 @@ class memory_driver_redis
 			} catch (RedisException $e) {
 			    echo $e;
 			}
-			$this->enable = $connect ? true : false;
+			$this->enable = $this->checkEnable($connect);
 			if($this->enable) {
 				if($config['requirepass']) {
 					$this->obj->auth($config['requirepass']);
@@ -27,7 +27,16 @@ class memory_driver_redis
 			}
 		}
 	}
-
+	public function checkEnable($connect){
+		if($connect){
+			$this->set('_check_','_check_',10);
+			if($this->get('_check_')=='_check_'){
+				return true;
+			}
+			$this->rm('_check_');
+		}
+		return false;
+	}
 	function &instance() {
 		static $object;
 		if(empty($object)) {