Beispiel #1
0
 /**
  * 创建一个自身的单例对象
  *
  * @return self
  */
 public static function getInstance($config)
 {
     if (!isset(self::$_instance) || !is_object(self::$_instance)) {
         self::$_instance = new self($config);
     }
     return self::$_instance;
 }