[Keyser S?ze]

if someone used this code here, to detect what the real IP address is, (unless sent by a annonomous proxy) how could, or could u use that to help stop banned users from coming back under a proxie? or would this help in any other way

if (getenv("HTTP_FORWARDED") != ""){$ip = getenv ("HTTP_FORWARDED");$proxy_used = 1;}
elseif (getenv("HTTP_X_FORWARDED_FOR") != ""){$ipt = explode (",",getenv ("HTTP_X_FORWARDED_FOR")); $ip=trim($ipt[0]);$proxy_used = 1;}
elseif (getenv("HTTP_CLIENT_IP") != ""){$ip = getenvgetenv("HTTP_CLIENT_IP");$proxy_used = 1;}
else {$ip = getenv ("REMOTE_ADDR");}