PayPal IPN WordPress Developer Guide

The PayPal IPN WordPress plugin is a foundation for building tools that automate tasks when transactions hit your PayPal account.  It is easily extendable using a wide variety of developer hooks that can be used to trigger functions within your own plugins or themes...

PayPal IPN WordPress Hooks Guide

Introduction PayPal IPN for WordPress provides a number of hooks so that you can automate tasks within your own plugins/themes based on the type of IPN that was sent or the payment status of a transaction. This allows you to easily extend the plugin to suit your...

PayPal IPN for WordPress Update Notice

Important Notice For many years, we have maintained PayPal IPN for WordPress as a free plugin.  Unfortunately, we are not able to sustain this and continue active development the way we have been. As of the PayPal IPN for WordPress 2.1.0 update, the plugin is now a...

PayPal SSL Error – POODLE Vulnerability

What is POODLE?POODLE is an internet security vulnerability that impacts the Secure Sockets Layer (SSL) 3.0 protocol, which was designed to ensure secure connections when browsing the Internet.  When exploited, this vulnerability enables a cyber criminal to gain...

Recovering from PayPal Express Checkout Funding Failures

PayPal Express Checkout works by allowing buyers to utilize their PayPal digital wallet in order to make purchases.  This digital wallet may consist of bank account(s), debit card(s), and/or credit card(s). During checkout, the buyer chooses which funding method they...

WooCommerce Add Custom Cart Fee Snippet

Recently I was contacted by a user of our PayPal for WooCommerce extension to inform me of a bug in the plugin. Custom fees were not getting included in the cart totals. As such, PayPal would return an invalid cart totals error upon checkout. Doh! I needed a quick way...

PayPal Invoicing IPN Updates

Introduction I integrated PayPal’s Invoicing API’s into a FileMaker solution for a client of mine a couple of years ago.  We use the API to implement push-button invoicing from FileMaker, and then we use PayPal IPN to log all transaction data in the...