code: protected function buildRequestParam($images, $options = [])
      {
          //Baidu OCR不支持多个url或图片，只支持一次识别一张
          if (is_array($images) && ! empty($images[0])) {
              $images = $images[0];
          }
  
          // if (! $this->supportUrl && FileConverter::isUrl($images)) {
          //     throw new RuntimeException('current method not support online picture.');
          // }
  
          if ($this->supportUrl && FileConverter::isUrl($images)) {
              $options['url'] = $images;
          } else {
              $options['image'] = FileConverter::toBase64Encode($images);
          }
  
          return $options;
      }
docs: Build Request Param
  
  @param  string\SplFileInfo $images
  @param  array  $options
  
  @return