CiviContribute GoogleIPN.php getallheaders() error when running PHP as CGI

With CiviCRM/CiviContribute on a host that runs PHP as CGI the post-order callback from Google to googleNotify.php fails with the error:

"Fatal error: Call to undefined function getallheaders() in [MY_PATH]/drupal/sites/all/modules/civicrm/CRM/Core/Payment/GoogleIPN.php on line 575"

The problem is that getallheaders() is not available when PHP is run as CGI. The problem can be resolved by patching GoogleIPN.php by:

1. Defining the function emu_getallheaders() somewhere in GoogleIPN.php

(from http://forums.digitalpoint.com/showthread.php?p=4768191:)

function emu_getallheaders() {
foreach($_SERVER as $name => $value)
if(substr($name, 0, 5) == 'HTTP_')
$headers[str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))))] = $value;
return $headers;
}

2. Replacing the single call to getallheaders() in GoogleIPN.php line 575.

See forum post: http://forum.civicrm.org/index.php?topic=1472