if (!empty($_SERVER['HTTP_CLIENT_IP']))
$ip=$_SERVER['HTTP_CLIENT_IP'];
else if (!empty($_SERVER['HTTP_X_FORWARDED_FOR']))
$ip=$_SERVER['HTTP_X_FORWARDED_FOR'];
else
$ip=$_SERVER['REMOTE_ADDR'];
?>
The ZUL Testing Language(ZTL) has been available for one year and during this time we have looked into improving the verification of layout placement, which is hard to verify its correctness. This led to the idea of a visual test is come up to solve the problem…