embedded php not working from other machine?

hopefully an easy one.

I have set up my laptop to be a server, installed PHPDEV, it all works fine.

I open PHP files on it from another machine and it also works fine, the html and php work as expected.

I've just tried from another WinXP machine and it doesn't display PHP.

If I open this: (\22.33.44.55\public\test.php)

Agent: So who do you think you are, anyhow?
<br />

<?php
// print output
echo 'Neo: I am Neo, but my people call me The One.';
?>

</body>
</html>

I only get:
Agent: So who do you think you are, anyhow?

I assumed that all the work is done on the server by apache/PHP and so the new machine doesn't need anything doing to it or installed?

Any ideas?

Many thanks

Chedz 😃

Sorted, the guy had mapped my PHP\public folder as j:\public

in explorer he was opening it as J:\public\file.php

when we changed it to \ipaddress\file.php it worked fine.