What can return the ENTIRE url?

Hello. I'm looking for PHP equivalent to Javascript's location.href property. This returns the ENTIRE url (including any variables that might be submitted to a script). I've looked at phpinfo(), but I didn't see exactly what I am after. If the answer is the HTTP_POST_VARS variable, could someone please give me a simple example of how exactly this variable is to be used in code?

Thanks for your time.
Dan

The following code will get the path and everything after the domain name.

ie if the page name is http://www.devshed.com/index.html?bleh=bleh

the following code will echo out "/index.html?bleh=bleh"

<?
echo $PHP_SELF."?".$QUERY_STRING;
?>

Ah, perfect. Thanks alot.

Dan