Can't display running results

Question

Why can’t the running results be displayed?

<?php

$x = 75;

$y = 25;

function addition()

{

$GLOBALS['z'] = $GLOBALS['x'] $GLOBALS['y'];

}

addition();

echo $z;

?>

##

Answer 1

There is no problem with the code. It is recommended to post the error message.

$zThe output result is 100