Hi jTAG,
First, I'd like to know where you heard about our viewer?
You are getting the unexpected T_FUNCTION because you are using an older version of PHP, most likely version 5.2 or older. You will need at least version 5.3 or higher.
Most cPanel based hosting providers will allow you to update PHP version from your cPanel. Search PHP Version Manager or PHP Configuration option and click on it.
Select PHP version 5.6+ or 7 and save.
If not, ask your host to update the PHP version of your hosting. Most likely, they will do it for free and it’s the easiest way to update.
older versions of PHP have reached the end of their life and no more security updates are provided meaning that you are already running a big security risk with your current version.
Hope this helps, if not then please let me know.