format = Response::FORMAT_JSON; } public function build($code = 0, $msg = '', $data = []) { $this->code = $code; $msgs = ResponseConstant::RESPONSE_MSG; if (empty($msg)) { $this->msg = $msgs[$code] ?? ''; } else { $this->msg = $msg; } $this->data = $data; } public function format() { return ['code' => $this->code, 'msg' => $this->msg, 'data' => $this->data]; } }