Android or php data synchronization on the device. What are the implementation methods?

Question

PHP

Hello.
There is a server and a device running Android OS on the same network. I need to implement synchronization of files, folders, subfolders in general of the entire directory. The "master" is a remote server, the client is an android device. I would like to synchronize on-line, what changes have occurred on the master, they are also transferred to the client (create, copy, delete, edit).
Is there an app for my wishes?
Also, php with mysql is spinning on the server and client, can this be done through php?

Answer 1

it's well written here