PHP pages not working on remote server

I have built a few pages using various Data Bridge plugins which all work fine on my local testing server. But don't work when uploaded to my remote server. I suspect it is an issue with PHP versions but I have no idea on how to resolve it. I believe my server is running PHP 5.6. I have other sites set up the same with no problems with any PHP pages so I am a bit losses to what the problem is.

You can view the site at - www.rtmf.org.uk/test-site
The pages that are getting 500 internal server errors are;

right-to-manage-news.php
right-to-manage-success.php
contact.php

Thanks in advance!

It could be anything. Maybe just missing files that you didn't upload. If I had FTP access I could debug it.

See private message

You are referring to URL parameters without checking if they exist or not. I was able to get the news page to show up by checking if they exist before displaying them. There is a php.ini setting to ignore this kind of error that is probably different on your live server.

("".$_GET['year'] ."" == "2016")

becomes:
("".(isset($_GET['year'])?$_GET['year']:"") ."" == "2016")

Using that syntax or updating the php.ini file should correct the problem.

Thanks for this Ray. Ive had a go at adjusting the code in the 'right-to-manage-success.php' page but can't seem to get it working.

Any pointers please!

Thanks!

I updated lines 22 and 23 that referred to $_GET variables without checking if they exist. I also had to update the connection file since it seems you had overwritten the live settings with your local testing connection.

Thanks for this Ray... So what about the contact.php page which is just an enquiry form? I doesn't use any variables, as far as I'm aware..

On line 310 you have:
if ("".$_GET['action'] ."" == "sent")

needs to be:
if ("".(isset($_GET['action'])?$_GET['action']:"") ."" == "sent")

Thanks Ray. So now I've got to adjust most of the pages in the admin section.

http://www.rtmf.org.uk/test-site/admin

I've managed to correct some successfully but I'm stuck on 'rtm-properties-list.php' which uses a search behaviour. I've tried to adjust lines 10,16,17 and 18 referring to a page you corrected for me that also used a search behaviour but I must be incorrectly adjusting it. The page loads ok but the three buttons using the search behaviour causes error. plus the view all button is not working.

Help please!

You have the wrong syntax.

For instance line 16 you have:
($_GET['unknown']?$_GET['unknown']:"")

but it should be:
(isset($_GET['unknown'])?$_GET['unknown']:"")