Multumesc frumos Andrei am rezolvat si eu intr-un final asa :

Cod PHP:
if(isset($_POST['google-font-dev-api'])){ $gwf_font_api = $_POST['google-font-dev-api']; } 
if(isset($_POST['google-font-sort'])){ $gwf_font_sort = $_POST['google-font-sort']; } 

Dar cred ca e mult mai curat codul tau !