Все буквы в переменной становятся маленькими.
Пример 5-13. lower
index.php: $smarty = new Smarty; $smarty->assign('articleTitle', 'Two Convicts Evade Noose, Jury Hung.'); $smarty->display('index.tpl'); index.tpl: {$articleTitle} {$articleTitle|lower} OUTPUT: Two Convicts Evade Noose, Jury Hung. two convicts evade noose, jury hung.