My PHP Page Cache: Store and retrieve pages in cache files

This class can store and retrieve pages in cache files.

It can capture the output of the current script and store it in a cache file.

On the next access, if the page cache file exists and it has not expired, the class outputs the page cached contents.

The class may store cached pages in different directories for each group of pages. The directories may be created if they do not yet exist.

It can also remove the cache files and directories of a specific group or all groups at once.