Let's start from the top:

1. Tool: PHP Object Generator
This tool helped me many times because I'm to lazy to write my own DB connection classes :P It seems to me that it's allowed to put as many object attributes as you want to (I've tried with 20 and got bored clicking lol). They also posted 52 tutorials about PHP, OOP and MySQL that can be used anywhere you want.
This is one of my favorite tools.
URL :www.phpobjectgenerator.com/
Tuts:www.phpobjectgenerator.com/plog/tutorials


2. Tips & Tricks: Do you want/need stats page similar to AWStats for your WS?
No problem. If you're using PHP it has never been easier! Read this guy's post from the top to the bottom. You won't regret ;)
URL :www.techwhiz.info/2008/03/31/automatically-fetch-data-from-
awstats/


3. Tips & Tricks: Ever wanted to know what is the best way to code? Let's find out...
I think that commenting this would be redundantly... Contains 63+ tips and tricks.
URL :www.chazzuka.com/blog/?p=163


4. Tutorial: How to write classes in PHP
Brian Haase wrote simple, but useful introduction to OOP (Object Oriented Programming) in PHP. He described every single step about creating and using your class.
URL :www.php-editors.com/articles/simple_php_classes.php


5. Tips & Tricks: HTML, CSS, PHP, MySQL [...] Cheat Sheets :)
Everybody needs these sheets :D Very useful if you need quick and urgent "F1" about your favorite technique. Bookmark it! :)
URL :lorelle.wordpress.com/2005/10/10/html-css-php-and-more-chea
t-sheets/



Well, folks, that's it for now. I'll come with more useful links later...
Just hope some of mentioned helped you somehow :)


King regards!
Nix