How to “Validate” Human Names in CakePHP?

Question

I have a PHP script that is supposed to check for \"valid\" human names, but recently cracked against a name with a space, so we added spaces to our validator.
Rather th

Answer 1

There is no way to "validate". How can you prevent someone really called:

Robert'); DROP TABLE Students; --

http://xkcd.com/327/

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EDIT: What I really mean is, people in some countries may have their name in different language (say Japanese, Chinese, Korean) and may even contains symbols. How will you think if a site says your name is "INVALID" when he/she is entering their real names?