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Wow. Even the thumbnail makes my eyes hurt. Worst color scheme ever.

Looks to me like this guy has effectively reinvented Memcache with flat files. No idea why he bothered, unless his server has no RAM...

http://www.php.net/manual/en/intro.memcache.php
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I love it when developers throw out a module like memcache, and completely fail to see the benefit of at least trying to understand how to write your own caching mechanism. That just goes to show that most developers are cut-and-paste, fly-by-night programmers. Could he use memcache? Would it suit his needs as well as the needs of several others? Well, it sure might, but then you would really know absolutely nothing about object caching in PHP would you? Try suggesting an alternative approach altogether, other than a pre-built solution.

I custom built the system I use for my site. It uses a combination of file caching + memcache depending on how old the object being cached is and how frequently it is accessed. So this is a nice beginning towards that, but I would certainly take a look at memcache. If you need caching from multiple servers, try APC

Thanks for everyone's comments in this thread.

@Daron: You'll have to excuse my ignorance, I didn't know about Memcache. I'll be looking into it to see if it suits my needs though.