Is it possible to create a global namespace alias?

Is it possible to create a global namespace alias in PHP or does the alias have to be defined in EVERY file that I use? Here is an example: file: main.php <?php use \this\is\my\custom\namespace\Item as nsItem; ?> file: index.php <?php require_once “main.php”; // Attempt to use namespace alias defined in main.php file nsItem::test(); ?> The above code doesn’t work for me. The namespace alias defined in the main.php file isn’t accessible in the index.php file. Is there a way to make the “nsItem” alias a “global” one, so that I don’t have to define it in EVERY file that I want to use? -Matt