Securing php api to use in android application

Question

I am newbie to android development. I am using android studio for developing an application. Things i have done

1. Created a DB with two ta

Answer 1

You can choose you Authentication for PHP here:

http://pear.php.net/packages.php?catpid=1&catname=Authentication

I think that Basic or Digest Auth (+ https:// SSL with self signed certificate) will be good choose for you Rest-Service (PHP RESTful JSON API).

For Android application I think the best choose for RestClient library is:

http://square.github.io/retrofit/

(I recommend you to keep all source code in one Language only -Java. You can easy create Java Rest Service and add Spring Security Authentication)