Express Checkout via Braintree SDK

This project is a PHP Web Application that demonstrates the Express Checkout via Braintree SDK payment experience using the Braintree client JavaScript SDKs and the server-side PHP SDK.

Express Checkout via Braintree SDK allows you to integrate Express Checkout using the Braintree SDK without a Braintree account.

There are two Payment Flows in the demonstration. Mouse-over the buttons in the Shopping Cart to review the Payment Flow diagrams.

1. Payment Flow 1: The Buyer selects Shipping Address and Wallet inside the PayPal mini-browser and completes the payment on the Seller's website.

2. Payment Flow 2: The Buyer provides Shipping Address on the Seller's website then completes the payment inside the PayPal mini-browser.

Prerequisites

1. Update incl.conf.php with your ACCESS_TOKEN. set ENVIRONMENT to sandbox or production. The merchant account needs to be set up with the currencies that will be accepted.

2. The Braintree PHP SDK requires PHP version 5.4.0 or higher and the PHP cURL extension.

3. Verify that all the files are in place by running and passing the Unit tests (process shown below).

   wget https://phar.phpunit.de/phpunit-5.7.phar
   (Download a version of PHPunit consisent with your php version)
   
   mv phpunit-5.7.phar /usr/local/bin/phpunit
   
   chmod a+x  /usr/local/bin/phpunit
   
   phpunit --version
   
   phpunit Tests/unit_test.php
   

4. Web Server with PHP enabled.

5. Ensure you have the latest version of Braintree server PHP SDK (https://developers.braintreepayments.com/start/hello-server/php). If a later version exists, replace this directory (braintree-php-3.30.0) with the latest version of the libarary and update the incl.conf.php

Quick Start Demo Deployment Using XAMPP

1. Download PHP server. Use a server such as XAMPP (https://www.apachefriends.org/index.html) to be able to host the Demo code sample.

2. Browse to the htdocs directory of xampp. Unzip the downloaded demo code folder and place it in this htdocs directory.

3. Start the Apache server in XAMPP from the XAMPP control panel.

4. Open the website in the browser and access it as: http://<my_domain>/<php_code_folder_name>/index.php Here, <my_domain> will be localhost if hosting on your own machine. The <php_code_folder_name> is the name of the folder under which the downloaded code resides.

5. Read further instructions when index.php in opened in a browser.

How the code works

The starting point is index.php. Click the PayPal Checkout button (Payment flow 1) or Proceed to Checkout button (Payment flow 2) to start a payment flow.

In the PayPal mini-browser, depending on the flow configuration, you'll see a Continue button (Payment flow 1) or a Pay Now button (Payment flow 2) . If the flow is cancelled, you'll be redirected to cancel.php.

index.php (Payment Flow 1) and checkout.php (Payment Flow 2) do the following:

• When a page is loaded containing client-side code (i.e. index.php and checkout.php), an authorization token is returned by bt-get-client-token.php.

• When the payment is submitted, the request parameters are posted to bt-transaction.php.

Review the forms and JavaScript in index.php (Payment flow 1) and checkout.php (Payment flow 2) to better understand the client configurations.

License

Code released under LICENSE