smarty truncate intercepts the string Truncates a character of some length from the beginning of a string. The default length is 80 Specifies the second parameter as the length of the truncated string By default, smarty intercepts to the end of a word, If you want to be precise about how many characters to intercept you can use the third argument and set it to “true” Specific usage is as follows:

//index.php $smarty = new Smarty;
$smarty->assign('articleTitle', 'Two Sisters Reunite after Eighteen Years at Checkout Counter.');
$smarty->display('index.tpl');
//index.tpl
{$articleTitle}
{$articleTitle|truncate}
{$articleTitle|truncate:30}
{$articleTitle|truncate:30:""}
{$articleTitle|truncate:30:"---"}
{$articleTitle|truncate:30:"":true}
{$articleTitle|truncate:30:"...":true}

Output results: Two Sisters Reunite after Eighteen Years at Checkout Counter. Two Sisters Reunite after Eighteen Years at Checkout Counter. Two Sisters Reunite after… Two Sisters Reunite after Two Sisters Reunite after - Two Sisters Reunite after Eigh Two Sisters Reunite after E…