PHP App in Google App Engine中，如何检测传入重定向的url？

Question

I am not sure if this is possible but was wondering if we can detect the url from where header('Location: ') initiated.

I have a couple of scripts with header('Location: /main.php') and now when main.php is executed I want to find out from which script or URL did the redirect initiate from.

script.php
header('Location: /main.php');

main.php
//detect the source url.. ie /script.php or website.com/script.php
// do some action
header('location: /script.php');

Is this possible?

Answer 1

I think you could use something like this on main.php.

$referer = $_SERVER["HTTP_REFERER"];