Example of Using Global variable in PHP

See the Code Carefully you can find the Use of Global Variable

<?php
function test() {
$foo = "local variable";

echo '$foo in global scope: ' . $GLOBALS["foo"] . "\n";
echo '$foo in current scope: ' . $foo . "\n";
}

$foo = "Example content";
test();
?>

The above example will output something similar to:

$foo in global scope: Example content
$foo in current scope: local variable

So we can use Global variable in any function with repeatably changing it's value in a function But Keep the value unchanged outside the function.