gzencode and stream http archive

//
// usage: curl http://localhost/gzencode.php/foo/bar
//

// flush gzip buffer to stream
$gzip = function($data)
{
  $flush = function()
  {
    global $gzip;
    $data = gzgetc();
    if ($data === false) {
      return false;
    }

    echo $data;
    $gzip->flush();
    return true;
  };

  gzwrite($data);

  return $flush();
};

// setup gzip
$gzip = gzopen('php://output', 'wb9');

// flush some data
$gzip('foo');

// close stream
gzclose($gzip);