abdi
Platinum Pleskian
Just tried this hoping for a neat solution. I was hoping I could place only the variables I wanted for a particular domain to use in /var/www/vhosts/system/mywebsite.TLD/etc/php.ini.
Make sure you are running PHP as a FastCGI, it should work with your custom variables placed in /var/www/vhosts/system/mywebsite.TLD/etc/php.ini I have tested it!