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count_characters[???]

count_characters(??? ?? ? ??)

test.php:
$smarty = new Smarty;
$smarty->ass('articleTitle', '??? ??? ?? .' );
$smarty->display('test.html');

test.html:
{$articleTitle}
{$articleTitle|count_characters}
{$articleTitle|count_characters:true} // ??? ???

??:
??? ??? ??.
29
33

???? ??
||
<?php echo "count_characters(計算變量里的字符數(shù))";