authorizaton

Hi All, I've got some probelm with getting username from Apache auth. . I've got a .htaccess file with AuthTYpe Basic, AuthUserfile.. , require valid-user, etc. Everytime when anyone wants to get the page a window pops up for username and password. It works fine. My question is if there's any way to get the username one writes into Apache poped up window? Can I somehow get it from Apache? (The PHP manual has an example using HTTP headers. It uses two variables ($PHP_AUTH_USER, $PHP_AUTH_PW). How do these two variables are set? Thanks for any help in advance, Mate Lajtos