I can go down to my local magazine shop here in Alberta Canada and pick up "Linux Format" magazine for $19.99CDN (approx $16USD). I was browsing through their fabulous archives and came across an article that fits in this forum perfectly:

http://www.linuxformat.co.uk/archives/LXF35.tut_php.pdf

I hope this can be of some value to you.


P.S.
Linux Format is a magazine that focuses not only on Linux, but the entire open source community. A great read if you can get your hands on a copy.