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Introducing Superglobals $_GET and $_POST

A PHP superglobal is an associative array of data that's created by the server to capture information from URLs, HTML forms, cookies, sessions, and web servers. It's called a "superglobal" because the information in the array is available everywhere in your script.

Superglobals can be used globally without typing global $variable; which means they are available inside of functions or met...