bad referrer errors in aformmail on PHP 5 server (SOLUTION)

If you get a bad referrer error even on a referrer in your referrers array if your site is on a PHP 5 server.

The server variable:
$HTTP_REFERER
has been replaced with:
$_SERVER['HTTP_REFERER']

Merely replace the line:
$ref = parse_url($HTTP_REFERER);

with

$ref = parse_url($_SERVER['HTTP_REFERER']);

Tada!

Brought to you by: www.billwinkle.org/cdg