Combu and PhP

Hi, I am new to Combu and I have a conceptual problem to solve, with your help.

I need to make a server-client program in which the database contains some data (variables and user dependent) and a php program other data (costants  for all users).

I wish to use Combu for login, data retrivial and other features with the database but the data retrived from the database must be elaborated by the php program, in serve side, and only showed on Unity program, client side.

In other words the Unity client will be a visualization tool and the UI of the client will comnicate with the php program, that is the only one authorized to interact with the database. In this sense  some Combu  functions wil be used by the php program.

Could you help me evaluating the feasibility of this approach and some example code/metacode?

Thank you for your time and for your help.

Chiara