This is the PHP version of the Xapo's SDK & Widget Tools. These tools allow you (Third Party Application, TPA) to easily develop your bitcoins applications to manage Accounts, Wallets, Transactions, etc., or embed tools like Payments Buttons, Donation Buttons and other kind of widgets into your web application using your language of choice. In this way, tedious details like encryption and HTML snippet generation are handled for you in a simple and transparent way.
For more information please visit: http://developers.xapo.com