For your filter to return only/no digits, I would recommend doing a bit of reading on preg_replace ( http://us2.php.net/preg_replace ) while noting the following flags: \d Matches any decimal digit; this is equivalent to the class [0-9]. \D Matches any non-digit character; this is equivalent to the class [^0-9]. ex: preg_replace('/\d/', '', $str); preg_replace('/\D/', '', $str); "Todd Cary" <todd@xxxxxxxxxxxxxxxxxx> wrote in message news:45F6B3F1.6090308@xxxxxxxxxxxxxxxxxxxxx > Chris Boget wrote: >>> I would like to write a filter that takes the text "smith" or "SMith" >>> and returns "Smith"; same for "ralph smith". Is the a good source on >>> using filters this way? >> >> It may not be the most efficient way of accomplishing this, but you >> could do something like: >> >> $string = 'SMith' >> $fixedString = ucwords( strtolower( $string )); >> >> thnx, >> Chris > > Thank you! I did not know about the ucwords() functions, and it does not > need the string set to lower case. > > Now to create a filter that returns only numbers (e.g. "a1234z" -> "1234") > and the same for non-numbers. > > Many thanks... > > Todd -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php