Oh thanks, I was beginning to think I had bad breath or something

. Yes, I know it's an AND and that's what I need. Either string might be present in the sig of someone I don't wish to auto-ban. Only 1 party should have both. I test for them separately just in case something is between them.
I'll probably omit the usergroup tests. That was just to be sure that mod, supers, and admin groups would be exempted, but there's no way they'd have all the strings I'll test for in their sigs. No one will except the user I want to ban.
Thanks LOADS man, this is my 1st attempt at writing anything in PHP. Based on what you've shown me, I'm probably just going to test for the presence of 3 strings (with ANDs) and omit the other tests. Thanks again.