i mean, for learning (for a noob) enough the simple html.
In bigger web-work must the XHTML + CSS
in php.
The html is the design, the php is the engine wich can showing the html
I mean, the php is a very simple and easy programming language, its from the c++ lang, just have dinamical functions with very good database support. If u like learning it, just search tutorials, must 1-2 week, and u can programming. (but for the medium level u must learn 1 year, for the high / high-end u must 2-3 year lerning and 2-3 year routine).