// 获取客户端真实ip()

     protected function getIP()

     {

     global $ip;

     if (getenv("HTTP_CLIENT_IP"))

     $ip = getenv("HTTP_CLIENT_IP");

     else if(getenv("HTTP_X_FORWARDED_FOR"))

     $ip = getenv("HTTP_X_FORWARDED_FOR");

     else if(getenv("REMOTE_ADDR"))

     $ip = getenv("REMOTE_ADDR");

     else $ip = "Unknow";

     return $ip;

     }