private function _get_client_ip() {        $ip = $_SERVER[‘REMOTE_ADDR‘];        if (isset($_SERVER[‘HTTP_CLIENT_IP‘]) && preg_match(‘/^([0-9]{1,3}\.){3}[0-9]{1,3}$/‘, $_SERVER[‘HTTP_CLIENT_IP‘])) {            $ip = $_SERVER[‘HTTP_CLIENT_IP‘];        } elseif(isset($_SERVER[‘HTTP_X_FORWARDED_FOR‘]) AND preg_match_all(‘#\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}#s‘, $_SERVER[‘HTTP_X_FORWARDED_FOR‘], $matches)) {            foreach ($matches[0] AS $xip) {                if (!preg_match(‘#^(10|172\.16|192\.168)\.#‘, $xip)) {                    $ip = $xip;                    break;                }            }        }        return $ip;    }