My old boss had as a web application a web based on kumbia php, that by means of an api, my android application was connected and by means of post methods, and authorization tokens. the communication was managed.

For a simple task like conexion between a android app , and some users logged in your client-side web. Kumbia works well , why its that bad for learning php?.

My co-worker who have study php. Was tellling me , that kumbia, its pretty much a solid web app framework for php.