You can cast UUID objects to strings to get a nice printable version. That same string can be used with UUID::import()
to create an identical UUID object again:
use phpcassa\UUID;
$uuid = UUID::uuid1();
$pretty_uuid = (string)$uuid;
echo("Printable version: " . $pretty_uuid . "\n");
$uuid_copy = UUID::import($pretty_uuid);
assert ($uuid == $uuid_copy);