At this way you can run different versions for every directory you have in public path.
Cpanel (as far as I know, correct me if I'm wrong) will run globaly one version per user no matter on directory you are in atm.
At this way if you want your ./public_html can be PHP 5.6, ./public_html/foo1 can be PHP 7.2, ./public_html/foo2 can run PHP 7.1, etc.