PayPal's Digital Goods for Express Checkout service is a wonderful payment solution with disjointed documentation and an unfortunately verbose name.

I created the PayPal Digital Goods PHP Library to connect the dots in the documentation and offer a PayPal library that is friendly to humans.

This repository is designed to do three things:

• demonstrate the PayPal PHP library in action;
• demonstrate how to setup the PHP library for your own use;
• show how to include the PayPal Digital Goods PHP Library as a submodule in your applications main Git repository.

To run the examples for yourself, clone the entire folder somewhere onto your server, eg. http://example.com/paypal-examples/.

git clone --recursive git://github.com/thenbrent/paypal-digital-goods-php-examples.git

Note the use of the --recursive flag. This must be included to clone the library as it is included as a Git submodule.

Once cloned, visit http://example.com/paypal-examples/index.php in your browser & follow the links.

For convenience, this example uses my PayPal Sandbox Credentials. To test with your own API credentials, create a sandbox seller account and request it be set as a Digital Goods account in this x.com forums topic.

Login to the account and get your API credentials from the API Access page.

Copy the API Credentials into http://example.com/paypal-examples/functions.php.