laravel - have same base code for multiple TLDs -

for example:

abc.com
there's registration/login authentication build in codeigniter using rest api

somename.bm
again there's registration/login authentication build in laravel using same ^ rest api

both these domains uses same concept of authentication of user , after login, of pages same (expect data choose display , css).

now simple question is, there way can have common code both these websites access same controller , somehow differentiate call , call rest api access data , display accordingly.

again, if miss or need further elaboration, feel free contact me here.