static function updateThumbnail($fname, $w, $h, $quality = 25)
{
$thumbDir = dirname($fname) . '/.thumbs/';
$thumbFname = $thumbDir . basename($fname);
$doUpdate = @filectime($fname) > @filectime($thumbFname);
if ($doUpdate) {
// create thumbs dir
if (!file_exists($thumbDir)) {
@mkdir($thumbDir);
}
// save thumbnail
$img = new img($fname);
$img->resize($w, $h);
file_put_contents($thumbFname, $img->render($quality));
}
return $thumbFname;
}
