Integrating APIs with an already built website

I have a website developed already using JS and a lot of APIs are running for this site . APIs are built on PHP. Now is it possible to build an API on backendless and make it work for the same site along with the other APIs?
I will be connecting to an external DB.

Hi @Naraen_M.D,

it is possible. I suggest you start from our docs and play around with our API. If you have any questions/problems, let us know.