Hit by a snowball

Can someone tell me how to set certain data for a snowball which can be used to check later?

use $snowball->namedTag
e.g.

PHP:

$snowball->namedtag->MyData = new String("MyData", "dafdahfkiashfasiduashdia");

Thanks. But do I use getName to retrieve the data?

$snowball->namedtag["MyData"] will get you the string (not String object).

Warning: The String class has been renamed to StringTag in PHP 7 support.