Here's the ubiquitous 'Links' page that almost always turns up on this type of website - they have been meticulously chosen to appeal to a highly specific audience demographic: me! Nevertheless, take a look around - you never know, you may stumble onto somewhere amazing (possibly, even useful!!)
In all honesty, this page contains one of my earliest efforts with PHP/MySQL. There are many, many larger sites around providing far more links than this one ever will, but what the hell: it's mine, and all of the links are relevant to me in some way!!!
You have a choice of search options here: you can just carry out a straight keyword search, you can search for keywords in a particular category, you can retrieve all of the entries within a particular category, or you can simply retrieve all of the entries - what more could you want?