how to get REAl ip

[mcshen]

i am working on a shopping cart project. I am redirecting all users who are behind a proxy(like those anonymouse proxies0.

i can find their proxy ip. but, i can't seem to find their REAL ip.

if(getenv("HTTP_CLIENT_IP")) {
$ip = getenv("HTTP_CLIENT_IP");
} elseif(getenv("HTTP_X_FORWARDED_FOR")) {
$ip = getenv("HTTP_X_FORWARDED_FOR");
} else {
$ip = getenv("REMOTE_ADDR");
}

gives the proxy ip too.
any idea?

[Duey]

its impossible. and everyone else will say the same thing. k? so dont bother to keep asking.
why is it impossible? because the proxie gets the web site off your server and sends it off to the user. so really the users ip never gets to your server so it will never be found.

[mcshen]

this is the first time i asked this question.
calm down man!

[Duey]

lol its just this question gets asked every week. and they always ask is there another way....

[milind24]

Not sure but may be this will help :

$HTTP_REMOTE_ADDR

[Duey]

that just gets the IP address of the proxie/....

[jerdo]

If the proxy is anonymous you won't get the user's ip, but there are a lot of proxies out there that are not anonymous in which case the code you listed should give the users ip (or the other proxy they are running through if they really want to hide).