Include the file containing the variables you're referencing

website/gettext.wesnoth.org/functions.php

@@ -89,6 +89,8 @@ function getpackage($string) {
 	return str_replace("wesnoth-","",$string);
 }
 
+include("config.php");
+
 function getwescampbranch($version) {
 	if ($version == 'trunk') {
 		return $wescamptrunkversion;