public function isUploadedFile($path)
    {
        if (!$path) {
            return false;
        }
        if (mb_orig_strpos($path, $this->getUploadTempDir() . '/') !== 0) {
            return false;
        }
        foreach ($this->attrs->files as $file) {
            if ($file['tmp_name'] === $path) {
                return true;
            }
        }
        return false;
    }