PayPal支付平台的接口编程文档。PayPal是目前国际电子支付中最常用的平台，如果你开发电子商务网站需要解决国际支付问题，便可以使用该平台。本文档说明了如何将PayPal支付平台集成到你的电子商务网站中。-PayPal payment platform programming interface documentation. PayPal is an international electronic payment in the most commonly used platform for the development of e-commerce site if you need to address the issue of international payments, they can use the platform. This document explains how to integrate PayPal payment platform to your e-commerce site.