The SitePoint PHP blog has posted the second part of their series about using the CoinBase API through PHP. In this new tutorial they use the API connection made in the first part via the Coinbase SDK.
In part 1, we covered basic installation and usage of Coinbase's Bitcoin PHP API and the accompanying SDK. In this second and final part, we'll be building our sample application.
He briefly shows how to send and receive bitcoins before diving into the application. His simple application includes a basic welcome page, a payment page, thanks page and a cancel page (in case of errors). Complete code for the HTML, CSS, and PHP (API calls) is included in the post. He shows how to create the button to start the payment process and add it to the page.