Here are some sites that are recommended by PHP Horizons. Enjoy!
PHP/MySQL/HTML/JavaScript Sites
W3 Schools
Quite possibly the best programming teaching site there is. Wether you're new to programming, or a veteran,
this site is a one stop source for information on all sorts of web related programming.
PHP Official Site
The authoritative place for information on PHP. The online documentation covers every aspect
of PHP imaginable. If you can't find it in their documentation, then that feature hasn't been added
to PHP. I'm digging through this site on a daily basis, and all PHP programmers that aren't experts
yet should be spending some time there as well.
MySQL Official Site
MySQL is perhaps all too commonly thought of as an "easy" programming language. Perhaps this
is because it is easy to get started. Quite the contrary though, MySQL can be difficult to wield
beyond the most basic level, and thus I highly reccommend spending some time here digging
through their documentation as well.
The Javascript Reference Series
This site provides some excellent resources on the JavaScript language. I don't use this site much, but the information contained
here, if fully examined and understood, will make the difference between a mediocre JavaScript programmer and someone that
takes JavaScript to a whole new level.
Mozilla Developer Center
A complete reference for Gecko based browsers with everything from a DOM Reference,
to a CSS Reference to a Javascript Reference. This site is a must for any developer
because it is the definite Firefox reference.
Microsoft Developer Network
Yes we all dislike developing web sites that work with IE, but how can anyone pass
up a definitive reference for everything IE? The site takes some getting used to, but
anyone serious about doing web sites that work in IE must use this site every once in a while.
Yahoo! Developer Network
Yahoo! Developer Network Home
YDN has tons of free tools and API's for programmers to use. This site is definitely worth a look.
The Yahoo! User Interface Library (YUI)
The Horizons Game Engine makes extensive use of the YUI Library. If you're a Horizons Owner,
or a developer working on scripts for the Horizons Engine, it will behoove you to get familiar
with the YUI Library. IMHO, YUI takes JavaScript with all of it's problems, and transforms it
into a beautifully expressive and powerful language and smooths cross browser differences
in many areas, most notably -- browser implementations of the Document Object Modal.
YUI Theater
This is a must see page for any JavaScript developer. I highly reccommend watching
any of the videos hosted by Douglas Crockford. He's the Senior JavaScript Architect
at Yahoo and the man knows his JavaScript better than just about anyone. Did I mention
he sits on the ECMA board? Or that he invented JSON? Go watch his videos!
Douglas Crockford's Wrrrld Wide Web
This site is not part of the YDN, but since Douglas Crockford is such a part of Yahoo,
the link to his personal site is here. There are a number of articles on his site covering
different aspects of JavaScript. If I were teaching a JavaScript class, I'd definitely
be drawing test questions directly from his site...