This is an old revision of the document!
if ($_SERVER["HTTP_X_FORWARDED_FOR"] != "") {
$IP = $_SERVER["HTTP_X_FORWARDED_FOR"];
$proxy = $_SERVER["REMOTE_ADDR"];
$host = @gethostbyaddr($_SERVER["HTTP_X_FORWARDED_FOR"]);
} else {
$IP = $_SERVER["REMOTE_ADDR"];
$host = @gethostbyaddr($_SERVER["REMOTE_ADDR"]);
}
echo "your ip: ". $IP;