The PayPal PHP Sample Code by PayPal presents how to communicate with the API to implement payment features into applications. Examples cover billing, invoices, notifications, payment experience, payouts, and sale.
We've added 11 more APIs to the ProgrammableWeb directory in categories such as Internet of Things, Identity, Payments, and Travel. One highlight today is the Fitch Finance Data API, which provides developers with archived, historical data for U.S. securities. Take a look at what's new.