class Config
{
      public static $obj;

      public static function getObj()
      {
            if (!isset(self::$obj)) {
                 return self::$obj = new self;
            }
            return self::$obj;
      }

      public function setDbconnect()
      {
            $cfg = (include __DIR__ . '/../config.php')['db'];
            foreach ($cfg as $key => $value){
                  $this->$key = $value;
            }
      }

      private function __construct()
      {

      }

      private function __clone()
      {

      }
      private function __wakeup()
      {

      }


}