function getRealIpAddr()
{
        if (!empty($_SERVER['HTTP_CLIENT_IP'])){ //check ip from share internet
                $ip = $_SERVER['HTTP_CLIENT_IP'];
        }elseif(!empty($_SERVER['HTTP_CDN_SRC_IP'])){
                $ip = $_SERVER['HTTP_CDN_SRC_IP'];
		}
        elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])){  //to check ip is pass from proxy
                $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
        }
        else{
                $ip = $_SERVER['REMOTE_ADDR'];
        }
        return $ip;
}