On Script-Tutorials.com today there's a new article introducing you to using APC caching in your PHP applications. Their simple example sets up a caching class that handles the dirty work for you.

Today I have another interesting article for PHP. We will talking about caching, and practice of using caching in php. I will make review of APC caching and will show you how you can use APC in PHP. [...] Now people have learned to use the server memory for data storage. RAM much faster than hard disk, and the price of memory falls all the time, so let's use all these advantages of this.

Included in the post is the code for a few different files - the caching class itself that implements the APC functions in PHP and some examples of it in use: saving objects, fetching data from the cache and removing things from the cache.