PHP $Globals - PHP Global Variables
- $GLOBALS is a PHP super global variable which is used to access global variables from anywhere in the PHP script (also from within functions or methods).
- PHP stores all global variables in an array called $GLOBALS[index]. The index holds the name of the variable.

Sample Code
<?php
$a = 26;
$b = 33;
function sum() {
$GLOBALS['c'] = $GLOBALS['a'] + $GLOBALS['b'];
}
sum();
echo $c;
?>
Output
59