See if changing header("Content-Disposition: attachment; filename=$name"); to

header("Content-Disposition: attachment; filename=" $name); works for you.

Try:

define ("base_url", "http://mysite.com/login");
$link = base_url . 'activate.php?x=' . urlencode($e) . "&y=$a";

Never mind, I found the answer...

define("base_url", "http://foo.com");

$filepath = base_url."/foo.gif";

Try changing all instances of BASE_URL to $BASE_URL and see if that works.

like BASE_URL="http://www.mysite.com/login";

I need to see the actual code line, sorry.

What does BASE_URL equal? Can you put in that line of code?

Your problem is BASE_URL. It isn't in a usable format. It needs to look like a variable.