Swear word substitution

I'm posting this again as i got a mail saying Trend SMEX Content Filter has detected sensitive content. Place = php-general@lists.php.net; ; Sender = CJ Subject = [PHP] Swear word substitution Delivery Time = November 14, 2002 (Thursday) 23:40:23 Policy = Dirty Words Action on this mail = Delete message Warning message from administrator: Sender, Content filter has detected a sensitive e-mail. There was not a swear word in my original post but there was a word that contained a swear word but is itself not a swear word. The word is Scu n thorpe and I need a script to allow wordslike this but remove proper swearwords. I've got a mysql based website with a php scripted fromt end. I want to parse the output the php scripts get from the database before "printing it as html" for swear words and substitute these for more acceptable words (on a word for word basis). I need to do it this way as I want to keep the original posts in their "rude" form in case I need evidence for misuse of the site. I need to be able to check for words separated by non alpha characters in case people get clever and write obscenities separated w i t h s p a c e s or with o_t_h_e_r characters or even new l i n e s or wordsruntogetherintoonelongword. I also want a list of permitted words that contain swearwords such as "Sc%%thorpe" which won't get changed. Has anybody done this? I have a feeling that there is a 1 line regular expression out there that will do this nicely. Any help appreciated Feeling rusty at coding... CJ