In a continuation of his "working with PHP and filesystems" pieces published on DevArticles, John Coggeshall has a new piece posted this morning dealing with PHP and file permissions.

Now, I know what you're thinking - this kind of stuff should have already been covered in the previous "working with files" pieces. Well, it was touched on briefly, but not covered well. There's a lot to know about it, and this article does a good job exaplining it. It's also a good intro for anyone that's just starting out with a Unix-based file system. One of the most confusing things can be the permissions, and getting it so that you can read/write to everything you need.

While a little short, this piece is a good starting point (it is only part one, after all), and the chart of permissions is a nice reference to have, especially for someone that's not used to having to think that much about permissions...