截取api接口返回信息中的json信息

application/em/controller/Payment.php

@@ -539,6 +539,7 @@ class Payment extends Base
     public function createFkNumb($data){
         $url = config('oafk.base_url').config('oafk.fk') . $this->apiKey();
         $res = httpPOST($url, ['data'=>json_encode($data)]);
+        dd($res);
 
         $start = strpos('{',$res);
         $end = strpos('}',$res);