I already have the coding for a working payment processor but now I need an API to allow users to make payments on the site using their own websites. It should be one page worth of code, requiring certain input and processing it using a database (imaginary for your purposes) then gives either an error code or the return values. It should be professional but can be quite simple. See here for an example API instruction http://www.libertyreserve.com/en/help/apiguide
If you want I can provide exc…
