Getting the current URL in PHP

[sc_king]

Is there a function to grab the current URL.

I have a list with a function which only works when logged in. After logging in I want to redirect them back to the page they were on.

Any ideas?

Can't work with GET or POST since it's being passed more than once. It gets kinda messy.

[scragar]

http://uk3.php.net/reserved.variables

$_SERVER['PHP_SELF']

that's a relative path, so you'll need to add your sites domain name to the front.