function translate_bytes($bytes) {
$b = 1;
$kb = 1024;
$mb = 1024 * $kb;
$gb = 1024 * $mb;
$tb = 1024 * $gb;
if ($bytes > $tb) return round($bytes/$tb, 1) . " TB";
if ($bytes > $gb) return round($bytes/$gb, 1) . " GB";
if ($bytes > $mb) return round($bytes/$mb, 1) . " MB";
if ($bytes > $kb) return round($bytes/$kb, 1) . " KB";
return round($bytes, 1) . " bytes";
}