PHP - Web Calendar with CSS

Create a simple web calendar with CSS (download the code for free).

https://drive.google.com/folderview?id=0B4fPeBZJ1d19TVRoRWVNdDFybHc&usp=sharing

There are two files (warning : in the same folder) :
►calendar.php
►style.css
The style.css is not necessary. I used it to make it prettier.

I used EasyPHP DevServer 14.1 CV11 to run the calendar.php(on localhost).