I'm trying to track and log users/visitors that are accessing my website using PHP's $_SERVER['REMOTE_ADDR']
to do so. A typical method for IP address tracking in PHP.
However, I am using CloudFlare for caching and such and receiving their IP addresses as CloudFlare's:
108.162.212.* - 108.162.239.*
What would be a correct method of retrieving the actual users/visitors IP address while still using CloudFlare?
Extra server variables that are available to cloud flare are:
$_SERVER["HTTP_CF_CONNECTING_IP"]
real visitor ip address, this is what you want
$_SERVER["HTTP_CF_IPCOUNTRY"]
country of visitor
$_SERVER["HTTP_CF_VISITOR"]
this can help you know if its http or https
you can use it like this:
if (isset($_SERVER["HTTP_CF_CONNECTING_IP"])) {
$_SERVER['REMOTE_ADDR'] = $_SERVER["HTTP_CF_CONNECTING_IP"];
}
If you do this, and the validity of the visiting IP address is important, you might need to verify that the $_SERVER["REMOTE_ADDR"]
contains an actual valid cloudflare IP address, because anyone can fake the header if he was able to connect directly to the server IP.