Browser Environment Detection: Detect browser size and other characteristics

This class can be used to detect screen size and other user browser environment characteristics.

It can generate HTML with JavaScript code that can detect the size of the user browser screen, browser type and version, operating system, etc..

The detected characteristics are stored by the JavaScript code in cookies that can be read by the PHP class on the server side.

The class can perform several types of tests based on the information stored in cookies, like whether the browser is running on a mobile device, or the browser is compatible with a certain browser type, etc..