PHP Regex for file/path

What would be the php regex to match any one of the following:

privacy.html
pri开发者_如何学运维vacy.htm
privacy
w3c/privacy.html
w3c/privacy.htm
w3c/privacy

thanks

JP

Try

(w3c/)?privacy(.htm(l)?)?

10char

This should work: ^[^\/]+(?:\/[^\/]+)?$