wordwrap

Wraps a string to a column width, the default is 80. As an optional second parameter, you can specify a string of text to wrap the text to the next line, the default is a carriage return "\n". By default, wordwrap will attempt to wrap at a word boundary. If you want to cut off at the exact character length, pass the optional third parameter as TRUE. This is equivalent to the PHP wordwrap() function.

Parameter Position	Type	Required	Default	Description
1	number	No	80	This determines how many columns to wrap to.
2	string	No	\n	This is the string used to wrap words with.
2	boolean	No	false	This determines whether or not to wrap at a word boundary (FALSE), or at the exact character (TRUE).

Template:

{$articleTitle = "Blind woman gets new kidney from dad she hasn't seen in years."}

{$articleTitle}

{$articleTitle|wordwrap:30}

{$articleTitle|wordwrap:20}

{$articleTitle|wordwrap:30:"<br />\n"}

{$articleTitle|wordwrap:26:"\n":true}

output:

Blind woman gets new kidney from dad she hasn't seen in years.

Blind woman gets new kidney
from dad she hasn't seen in
years.

Blind woman gets new
kidney from dad she
hasn't seen in
years.

Blind woman gets new kidney<br />
from dad she hasn't seen in<br />
years.

Blind woman gets new kidn
ey from dad she hasn't se
en in years.

see also wordwrap in PHP Smarty documentation