Hi,
I would like to help you with your payment gateway integration. First can you tell me from which payment gateway your trying to get it done? If its not something out there globally, it could take sometimes. I mean like if u choose your local bank gateway API, then have to code it from scratch, if its a well known gateway like paypal, it would be easy.
Let me know the gateway provider and pass me the API documentation you have received, then I can tell you how soon I can have it done for you. If they do not give API, still they will have documentation on how to integrate with their gateway, that would help
Thank you
Ahmed Hassan
Software Engineer