function getBillingData($id)
 {
     // use RecurlyAPI to gather billing information return the data back
     $data = RecurlyBillingInfo::getBillingInfo($id);
     return $data;
 }
 public function wpGetRecurlyBillingInfo()
 {
     session_start();
     echo json_encode(RecurlyBillingInfo::getBillingInfo($_SESSION['wpuser']['id']));
 }