Part2 - PHP Super Global Variables

These variables are available with in the entaire project. The variables which we declared in one file, we can access them in another file.
In PHP, All the Super Global Variables are predefined. All Super Global Variables are array Data type. All Super Global Variables are Associative arrays.

Submitting the form with in the same page
Difference between GET and POST form methods
What is Query String
$_SERVER
How to get the IP Address of a user
How to get the currently using browser information