The Authorize.net PHP SDK by Authorize.net allows to implement API authorization features into applications, useful to verify payments with credit cards. Developers can benefit from the three steps available on the official site, that include to import the SDK, create a new PHP file for a transaction, and run the program.
Moving money online is commonplace these days, and the simpler and faster the process can be, the more appealing it is. Ripple provides another option in the world of online payment solutions. It's an open source, almost free to use payment network that provides a simple and hassle-free way for anyone in the world to send money to anyone else. The Ripple API allows developers to use this functionality and integrate the payment system into other projects.