截取api接口返回信息中的json信息

application/em/controller/Payment.php

@@ -539,10 +539,9 @@ 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);
+        $start = strpos($res,'{');
+        $end = strpos($res,'}');
         $str = substr($res,$start,$end);
         dd($str);
         $res = json_decode($str,true);