Revison 1
The below is an old bit of code I threw together when I was developing a Friend Networking site back in 2001. The site didn't last all that long, but I did manage to save all the handy snippets I used in it.

Below is code, which will return the age of somebody, when you parse their date of birth to it. I will probably make a cleaner version of the code at a later date and share it with everyone here.