PayPal Express Client-Side Checkout in PHP
This tutorial tackles on how to integrate Paypal Express Checkout using Client-Side API. Most E-commerce sites' payment method is with the use of credit card but if you want to integrate another payment method which is using Paypal, this tutorial will surely help you out. Paypal, as per the site description, is the faster, safer way to send money, make an online payment, receive money or set up a merchant account.