Shortening a sentence (string $value) without
chopping the string in the middle of words, and removes
excessive whitespace.
On construction, the value for $maxLength may be
set to specify max length of the filtered value. The default
value is 128. If the param $replaceWihtespace is
set false, the filter will not remove excessive
whitespace.
6.1.4. Sprintf
Provides sprintf formatting of input.
6.1.5. UrlString
This filter extends the SentenceLength filter, and
is used for filtering strings that are used in URLs. Example: The
string "My fabolous blog article" would become
"My-fabolous-blog-article" using default params. This filter has
the constructor params $maxLength and
$replaceWhitespace from
Zym_Filter_SentenceLength, and adds params
$encodeSlashes and $wordSeparator. The
first will tell the filter to encode slashes using regular
urlencode() (it is disabled by default since it
causes problems with mod_rewrite), and the second param is used
for specifying a separator to use instead of "-".
