Web Programmers Guide To Comparative Language Functions

I’ve been wanting to build a comprehensive guide comparing PHP, ColdFusion, ASP, etc for some time. Something like: Server-Side Scripting Comparative Anatomy, combined with links out to the documentation on php.net, Macromedia.com, and Microsoft.com. Something one can use to know that rawurlencode(), URLEncodedFormat(), and Server.URLEncode() are the three respective ways to do the same thing in the “big three.”