Does Location: headers constantly

Dear All, I was reading the post Re: [PHP] Setting a cookie and redirecting started 03 July 2002 02:54 in this news group. If one is providing a redirection service (the likes of domain name only hosting with redirection support), but you have no access to facilities other than php. (An odd senario I'll admit). It seems to me that header location is a "godsend". However, 1) does this HTTP protocol work with all browsers? 2) are there any complications that need to be addressed 3) is there an accepted best style of the header text to maximise multiple browser compatibility 4) should I be asking this in a different new group? Perhaps http.general? (if it exists) Henry Thanks in advance