pack to gz and return archive file download

function pack_and_download($file){
    $filename = $file->getClientOriginalName();
    $tmpFile = tempnam(sys_get_temp_dir(), 'data');
    $tmpFileHandle = fopen($tmpFile, 'w');
    fwrite($tmpFileHandle, $file->get());
    fclose($tmpFileHandle);
    $outputFile = tempnam(sys_get_temp_dir(), 'data') . ".gz";
    $fp = gzopen($outputFile, 'wb9');
    gzwrite($fp, file_get_contents($tmpFile));
    gzclose($fp);
    $response = new Response(file_get_contents($outputFile), 200);
    $response->header('Content-Type', 'application/x-gzip');
    $response->header('Content-Disposition', 'attachment; filename=' . $filename . '.gz');
    return $response;
}