.phpfile extension but the visual configuration one that will use a
.incextension (include PHP file).
stylesheet.css.phpfile that is a normal CSS stylesheet but including some PHP code. For that reason, and although the
.cssextension is kept, the file is named as a PHP file. For some reason that I don't know yet, this type of filename containing two dots can cause some problems on some operating systems. If so, simply change the filename from
visuals.incfile that will contain the visual configuration parameters as an array of key-value pairs (similar to the WINDOWS INI file way). This file is being included in the CSS stylesheet in order to make the visual configuration parameters available to the stylesheet.
index.phpfile that is our test file and will mainly contain HTML code using the styles defined in the stylesheet.