A very simplistic file cache that uses the ArrayAcces interface, (*1)
Usage
1) Include SimpleCache.php in your project, (*2)
require_once 'SimpleCache\SimpleCache.php';
2) Instantiate the SimpleCache class and provide a cache directory, (*3)
$cache = new \SimpleCache\SimpleCache('./tmp');
3) Use the $cache object like any array. Index names will be created as files. When you run the script again the index will still have the value you assigned it., (*4)