PHP beginner here. I have the following in index.php (the two files live in the same directory)...
<?php require_once( dirname( __FILE__ ) . '/functions.php' ); ?>
<!DOCTYPE html>
<html lang="en">
<head>
<title><?php echo $nds; ?></title>
</head>
<body>
</body>
</html>
...and here is the required PHP file (functions.php)...
<? php
// test variable
$nds = 'Test title.';
?>
This gives me an "undefined variable" error when tested in a browser. Is this an issue of scope?