Access parent URL from iframe

Question

Okay, I have a page on and on this page I have an iframe. What I need to do is on the iframe page, find out what the URL of the main page is.

I have searched aroun

Answer 1

I've found in the cases where $_SERVER['HTTP_REFERER'] doesn't work (I'm looking at you, Safari), $_SERVER['REDIRECT_SCRIPT_URI'] has been a useful backup.