How the some values end up in the SuperGlobal Arrays?

["Varuna Seneviratna" <varunaseneviratna@xxxxxxxxx>]

How the some values end up in the SuperGlobal Arrays?
What is the sequential order of this event?

When an HTTP request is sent to the web server, what does the server do to
send the variables to the SuperGlobal Arrays?

Thanks Varuna

-- 
Varuna Seneviratna
No 514 Udumulla Road
Battaramulla
Sri Lanka
Tel : 011-2888620
Mobile:0715617141