if ($totalcats > 0) {
    $adminObject->addInfoBoxLine(sprintf('<infolabel>' . '<a href="category.php">' . _AM_XOOPSTUBE_SCATEGORY . '</a><b>' . '</infolabel>', $totalcats), '', 'Green');
} else {
    $adminObject->addInfoBoxLine(sprintf('<infolabel>' . _AM_XOOPSTUBE_SCATEGORY . '</infolabel>', $totalcats), '', 'Green');
}