WRT to the joke; artists copy, genius steals outright and convinces everyone that it is his own. I think you know who you are, sir.
I confess to a certain uber-geekishness. The page was a response to a neurological condition that has pretty much destroyed my short term memory. It started much like null and void's cheat sheet but it evolved.
At some point it occurred to me that I could somewhat replace my failing memory with a database driven web page. After I got it working to my satisfaction I read yet another post of the form "Gee I wish I could program computers, I have such Wonderful Ideas about how things should work." That inspired the Xampp tutorial. I don't think anyone has actually worked through it; but I have a teenager I intend to inflict it on so it isn't wasted effort.