Nette\Http\FileUpload::toImage PHP Метод

    public function toImage()
    {
        return Nette\Utils\Image::fromFile($this->tmpName);
    }

 /**
  * @param FileUpload $file
  * @return string
  */
 public function save(FileUpload $file)
 {
     do {
         $filename = Strings::random(5) . '-' . $file->getSanitizedName();
         $targetFile = $this->getAbsolutePath() . '/' . $filename;
     } while (file_exists($targetFile));
     $image = $file->toImage();
     $image->save($targetFile);
     return $filename;
 }