I can see the directory and the index pages. Due to the 'test' directory being outside the 'webroot/html' directory it seems the PHP isn't working. I've tried making changes to the .htaccess file but was unsuccessful.
Do I need to edit the PHP.ini file? I don't want to break the non-test site. Any suggestions?
You shouldn't need to make any changes to the php.ini file. That said, make sure your .htaccess file is the same for both sites, *but* that any full URLs in it point to test.domain.com instead of www.domain.com
Also, this isn't needed under PHP 7:
If it's more convenient for you, send an email over to email@example.com
and put 'ATTN: Joe Muller' in the subject, along with the domain name - sometimes email discussion works better for tracking down subtle issues like what you're seeing.
-- Joe M.
Sonic System Operations