Initial capitalization of strings in PHP

I've got someone's first name in a string, and I'd like to do two things:

1. Make sure that it's capitalized properly: Joe, not JOE, joe, JOe, jOe, etc.
2. Strip any titles (and the titles may be in any permutation of lower/uppercase letters, and may or may not be punctuated: Dr, Mr, Mrs, Ms, and all the variations of those.

Are there functions I can use to do this?

Thanks!