Filtering a form for specific words

[Anon]

One guy has been annoying me a long time. What I need is an if-statement, that if a 'word' is in the message, it wouldn't post it. So far I've only managed to filter a form if it has the 'word' and nothing else on it. It would still allow messages like 'word rulz!'... So, is there any way to search the whole message for the 'word'?

[Anon]

Yep. You've got a choice of strpos() (probably the fastest but needs advance preperation to handle both upper- and lower-case), preg_match() (a bit slower but can handle mixed case without blinking), or ereg_match() (not much really going for this with preg_match() available).

See the manual for each of these.