I'm using the following code to display an archive dropdown:
wp_dropdown_categories( 'taxonomy=week&hierarchical=1&orderby=name' );
However the format of the taxonomy is week-1, week-2 .... week-10, week-11 I need it to be natural orderered as per http://www.php.net/manual/en/function.natsort.php e.g.
Currently it's being ordered true alpha e.g.
Not sure what the best way to do this is, any help or thoughts much appreciated.