DevX: Build an Object-Oriented File System in PHP

“The term ‘object-oriented’ is vague and frequently
misunderstood. Jonathan Rees (with more insight than the average
programmer) attempted to define its meaning, but even his
definition does not necessarily encompass the topic completely.

“Despite the difficulties of pinning down the terminology, for
the purposes of this article, you can assume an ‘object-oriented
file system’ has a specific meaning–it is a way to take advantage
of traditional object-oriented concepts such as inheritance, by
organizing your files and directories as if they were a class
hierarchy. This may seem like an odd idea, but in practice, it’s
extremely useful…”