1  public function test()
2     {
3         $request = Request::instance();
4         $ip = $request->ip();
5         $url='http://ip.taobao.com/service/getIpInfo.php?ip='.$ip;
6         $result = file_get_contents($url);
7         $result = json_decode($result,true);
8         dump($result);

9     }

 // 定義一個函式getIP() 客戶端IP，
function getIP(){            
    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";
    
    if(preg_match('/^((?:(?:25[0-5]|2[0-4]\d|((1\d{2})|([1-9]?\d)))\.){3}(?:25[0-5]|2[0-4]\d|((1\d{2})|([1 -9]?\d))))$/', $ip))          
        return $ip;
    else
        return '';
}
// 伺服器端IP
 function serverIP(){   
  return gethostbyname($_SERVER["SERVER_NAME"]);   
 }