Si usa per trasformare una variabile in maiuscolo.
Example 5.21. upper
<?php
$smarty = new Smarty;
$smarty->assign('articleTitle', "If Strike isn't Settled Quickly it may Last a While.");
$smarty->display('index.tpl');
?>
Dove index.tpl è:
{$articleTitle}
{$articleTitle|upper}
Questo stamperà:
If Strike isn't Settled Quickly it may Last a While. IF STRIKE ISN'T SETTLED QUICKLY IT MAY LAST A WHILE.
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