Get the URL of current script even if it's included?

Question

I have a PHP script that needs to know it's URL, even if it's included within another script. I've tried:

$_SERVER['REQUEST_URI']

But this doesn't return the URI to my script--rather, it returns the URI to the including script. I've also tried:

dirname ( __FILE__ )

But I can't seem to convert this to an absolute URL.

Can my script find its own URL, even if it's being included in another script? Thanks for your help!

Answer 1

I think you can't, at least not in a robust and portable way. PHP encourages developers to think that the URL maps directly with a script, so one may be convinced that for each script S there's a function(S) which gives its public URL.

Unfortunately, this is not true. As a quick reference, just think of mod_rewrite or the chance that your script may be requested by a reverse proxy.

If you really need this functionality, it could be that you have a design mistake, so if you tell what your problem is exactly (in terms of functionality, not implementation) someone may come up with the right solution for you.