modify refill callback notify function

helper/refill/api/xyz/lexiang/RefillCallBack.php

@@ -51,7 +51,7 @@ class RefillCallBack implements refill\IRefillCallBack
 
     public function notify($params)
     {
-        $status = $params['status'];
+        $status = intval($params['status']);
         $order_sn = $params['mchOrderNo'];
         $order_info = Model('vr_order')->getOrderInfo(['order_sn' => $order_sn]);
         if (empty($order_info)) {
@@ -59,11 +59,11 @@ class RefillCallBack implements refill\IRefillCallBack
         }
 
         $order_id = $order_info['order_id'];
-        if ($status === '2') {
+        if ($status === 2) {
             $data['official_sn'] = strtolower($params['certificate']) == 'null' ? '' : $params['certificate'];
             Model('refill_order')->edit($order_id, $data);
             return [$order_id, true, false, true];
-        } elseif ($status === '3') {
+        } elseif ($status === 3) {
             return [$order_id, false, true, true];
         } else {
             return [$order_id, false, false, false];