WampServer

Also, if you're behind a router, you need some port/IP forwarding. Check the info on www.portforward.com
Forum: WampServer English

You probably used a $_POST[''], $_GET[''], $_COOKIE[''] or anything like those on that line in your code. Escape this by defining the Post/Get/whatever variable with another name and then using that name in the code that gave the error. If it's not that: Like CyberSatium said, post your php code.
Forum: WampServer English