array(5) {
  ["code"]=>
  int(15)
  ["msg"]=>
  string(20) "Remote service error"
  ["sub_code"]=>
  string(5) "50001"
  ["sub_msg"]=>
  string(9) "无结果"
  ["request_id"]=>
  string(13) "16kfn2p6m8v1x"
}