Is there a Php function to search for a list of words in a given text block?

Where is the Ignore button?
I was actually looking for exactly that to use it against this rude logic_earth person.

Thanks StarLion. We can’t be giving WorldNews code that he can copy and paste and works! It seemed futile to be handing out code that he’s got no idea what to do with nor will take the time to learn; it’s a dirty tactic but one I’ve used before to get someone to think about the code they’re being offered and to start to learn how to debug trivial every-day problems. (: