bbPress.org

To go deeper into that code a code that does “forumS” for more than one and “forum” for just one?

$tf = get_total_forums();

printf(__ngettext('Viewing %d forum', 'Viewing %d forums', $tf), $tf);

functions.bb-statistics.php isn’t automatically included. The statistics.php file (https://trac.bbpress.org/browser/tags/1.0.2/statistics.php#L5) does include that file as well.