Server.Transfer in PHP?

[Braclayrab]

Hi,
I'm wondering how to do a Server.Transfer in PHP.  For those who don't know; Server.Transfer is an ASP command that transfers the servers response to another script. 
Example:

if not Session("bLoggedIn") then
    Server.Transfer 'Login.asp'
end if

Something like that, the details aren't important. 
btw, I'm not looking for a response redirect, the nice thing about server.transfer is that the client appears to still be at the original page and there is no need for another trip back to the client and then back to the server.

TIA!
-Clay

UPDATE:
I found the Header function but this actually changes the URL that the client sees in the browser... is there a way to avoid this?

[pocobueno1388]

You could use the include() function if that would give you what you wanted.

[Braclayrab]

Thanks,
that's what I ended up doing, works like a charm.