Going back to a calling page

[eluser]edjon2000[/eluser]
Hello again,

I am in the process of redesigning my ongoing web project to work with Reactor
and, have run into a few minor, but annoying problems, I say annoying because I am sure there is a workaround but for some reason I just can't see it, the first one is something that has been mentioned before and it relates to the URI PROTOCOL section of the CI config file and the fact that the AUTO option no longer seems to work, the reason I mention this is in case it is related to my second and main problem, I have a view page that can be called from various sections of the main site and I want to be able to link back to the calling page, in CI 1.7.3 I used code as follows

Code:

<?php echo anchor($_SERVER['HTTP_REFERER'], '« Back to previous page'); ?>

but this now generates an error message

Code:

A PHP Error was encountered

Severity: Notice

Message: Undefined index: HTTP_REFERER

Filename: site/views_view.php

Line Number: 9

on checking the $_SERVER super-global I noticed that there is no reference now to HTTP_REFERER

could this be related to the first problem I mantioned or is there some other solution that would work.

Any advice with this would be greatly appreciated

Jon