I need a litle help about fsockopen function

[matrixc]

I need a little help with the fsockopen function.

I have this PHP code

   if (    in_array($_SERVER['REMOTE_PORT'], array(8080,80,6588,8000,3128,553,554,47830,50070))
    || @fsockopen($_SERVER['REMOTE_ADDR'], 80, $errno, $errstr, 1))

I need to make @fsockopen check IPs by port 80 if it doesn't request authentication.

I think I should use isset($_SERVER['PHP_AUTH_USER']) in there somewhere, but I can't do it by myself. Can anyone help?

Thank you very much

[Artnessde]

$_SERVER['REMOTE_PORT'] is a random port of the visiting user.
$_SERVER['REMOTE_ADDR'] is the IP of the visiting User.

Why are you checking a random non standardport against a fixed list of standard ports?.

If you want to check if the visitor is using Port 80, check $_SERVER["SERVER_PORT"] as this is the port the user is connected by the protocol he is using.

2nd question is, where do you want to connect to? To the visitors PC, 99% chance he is behind a Firewall and has no local http server running.