How to enable PHP module on domain?
To Enable PHP module support in Plesk, Please follow these simple steps:-
1) Login to Plesk control panel.
2) Click on "Websites and Domains".
3) Click on the "Domain Name" under whom you want to enable PHP support.
4) Click on Check box in front of "PHP support" to enable php support If you want
5) Click on "OK" once you have enabled the PHP support.