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What is the real IP address...?

Posted: Thu Nov 10, 2005 12:42 pm
by traffic
Hello...

I am trying to get the real IP address of visitors to our websites... We currently provide millions of hits to our customers each month from several downline providers...

The problem is - we are getting between 5% and 10% uniqueness of visitors using _SERVER['REMOTE_ADDR']... Our providers are telling us that the uniqueness is more towards 75%... and, the reasoning is the way they are sending the traffic... They have not been more precise than that at this time...

I have been reading about traffic and proxy servers and so forth and have been wondering if some of our providers are using their 'gateway' as a proxy to deliver the traffic and we are getting the 'gateway' IP instead of the end_user ip...

I found the below script and was wondering if anyone had any thoughts...

Code: Select all

function getip() {
   if (getenv("HTTP_CLIENT_IP") && strcasecmp(getenv("HTTP_CLIENT_IP"), "unknown"))
   $ip = getenv("HTTP_CLIENT_IP");

   else if (getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARDED_FOR"), "unknown"))
   $ip = getenv("HTTP_X_FORWARDED_FOR");

   else if (getenv("REMOTE_ADDR") && strcasecmp(getenv("REMOTE_ADDR"), "unknown"))
   $ip = getenv("REMOTE_ADDR");

   else if (isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], "unknown"))
   $ip = $_SERVER['REMOTE_ADDR'];

   else
   $ip = "unknown";

   return($ip);
}

Thanks for any help you can give me...


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