Hi!
Is $_SERVER['REMORE_ADDR'] value is determinated by HTTP or TCP? I'm not sure, I remember I read somewhere, that it's determinated by HTTP, not sure if it's true, but if is, then how do I real IP from Apache, because somebody might spoff the IP in HTTP level. Thanks!

I'm not sure I understand you correctly, but I get my Apache (a self compiled httpd-2.2.3) to have a certain IP by adding this in httpd.conf:

#
# ServerName gives the name and port that the server uses to identify itself.
# This can often be determined automatically, but we recommend you specify
# it explicitly to prevent problems during startup.
#
# If your host doesn't have a registered DNS name, enter its IP address here.
#
#ServerName www.example.com:80
ServerName 169.254.255.20:80

where 169.254.255.20 is the static IP of the machine running apache.

Thanks!
I ment IP address of the visitor!

Yeah, the remote IP address. I'm not really sure, but I've seen that many PHP programs are able to get the "real" IP so it should be possible.

I've just googled the "get real ip php" and it should give you a few interesting links.

This one for instance:
http://www.webhostingtalk.com/showthread.php?t=516172