Setting up freeradius rlm_rest module

Am a new ubuntu and freeradius user. Have setup freeradius on ubuntu 12, currently working fine with mysql db. I would like freeradius to work with a php REST API, so that a custom sql schema from the php application is used instead of the freeradius one. How can this be done? How do I setup the rlm_rest module to work work with a php REST API. If anyone could provide me with a step by step instructions I will be more than glad.