count_characters[character count]
count_characters(Count the number of characters in the variable)
##test.php:$smarty = new Smarty;
$smarty->assign('articleTitle', 'Cold Wave Linked to Temperatures.');
$smarty->display('test.html');
test.html:{$articleTitle}
{$articleTitle|count_characters}
{$articleTitle|count_characters:true} //Spaces are also counted
Output:Cold Wave Linked to Temperatures.
29
33