Ive built simple web applications in the past using 'include' functions and typically I've used this command:
<?php include($_SERVER["DOCUMENT_ROOT"] . "/data.php"); ?>
This has worked great OUTSIDE of WordPress but my question is - can this be applied to a WordPress Environment?
(I should add the reason I am doing this: it is because I have to load a file which is approx 2MB into a WordPress Template and it crashes each time I try to save the file).