What are the super global variables in php

The super global variables in php are:

$GLOBALS, an array of all global variables (just like the global keyword, this will allow access to global variables inside a function - for example, in the form $GLOBALS['myvariable'].)
$_SERVER, array of server environment variables
$_GET, the array of variables passed to the script via the GET method
$_POST, the array of variables passed to this script via the POST method
$_COOKIE, cookie variable array
$_FILES, array of variables related to file upload
$_ENV, array of environment variables
$_REQUEST, an array of variables entered by all users, including the input content contained in $_GET, $_POST and $_COOKIE
$_SESSION, session variable array object.

Global variables, what are they, php