note 21005 added to language.variables.predefined

The problem with empty HTTP_X_FORWARDED_FOR is because of anonymous proxy servers: Anonymous - HTTP Proxy server does not send HTTP_X_FORWARDED_FOR variable to host, this improves privacy since your IP address cannot be logged. High anonymity - HTTP Servers of this type don’t send HTTP_X_FORWARDED_FOR, HTTP_VIA and HTTP_PROXY_CONNECTION variables. Host doesn’t even know you are using proxy server an of course it doesn’t know your IP address. -- http://www.php.net/manual/en/language.variables.predefined.php http://master.php.net/manage/user-notes.php?action=edit+21005 http://master.php.net/manage/user-notes.php?action=delete+21005 http://master.php.net/manage/user-notes.php?action=reject+21005