Create NameCase Function

[eluser]jamgood96[/eluser]
I've got a few hours of Codeigniter under my belt, but I haven't yet tackled Helpers or Libraries much yet.

I would like to create a function that 'tries' to properly capitalize people's names. There is something similar for Ruby. My question is what is the best way for me to implement something like this? I'm mainly going to utilize it for processing form inputs for our customer database. The forms will be filled out by employees, and in theory should be somewhat neat, but I would really like to try and control capitalization.

Any help would be great!!