Php superglobals

Superglobals means variables that are predefined variables in PHP which means that are always accessible. Below are some examples of the PHP superglobals variables.
The PHP superglobal variables are:

• $GLOBALS
• $_SERVER
• $_REQUEST
• $_POST
• $_GET
• $_FILES
• $_ENV
• $_COOKIE
• $_SESSION

$GLOBALS

$GLOBALS is a PHP superglobal variable that is used to access global variables from anywhere in the PHP script.
PHP stores all global variables in an array called $GLOBALS[index]. The index holds the name of the variable.
The example:-

<?php
$x = 75;
$y = 25;
function addition() {
    $GLOBALS['z'] = $GLOBALS['x'] + $GLOBALS['y'];
}
addition();
echo $z;
?>

output are:-100

 Hope you like this post...In the next post, I will explain all the remaining PHP superglobals variables.