code: public function getRequestCodeURL()
      {
          //Oauth 标准参数
          $params = [
              'client_id'     => $this->appKey,
              'redirect_uri'  => $this->callback,
              'response_type' => $this->responseType,
          ];
  
          //获取额外参数
          if ($this->authorize) {
              parse_str($this->authorize, $_param);
              if (is_array($_param)) {
                  $params = array_merge($params, $_param);
              } else {
                  throw new \Exception('AUTHORIZE配置不正确！');
              }
          }
          return $this->getRequestCodeURL . '?' . http_build_query($params);
      }
docs: 请求code