My full github repo is here: https://github.com/jrmadsen67. A few highlighted items are:
A PHPUnit extension for email functional testing. Based on my Mahana Mailinator API wrapper, it lets you retrieve the test email and run a variety of assert statements.
A small library to help jump start your internal messaging system, for the CodeIgniter framework. Setup to "snap" right on to your existing users table for easy deployment, and handles multi-lingual error messages. An unusual feature is the ability to add a new participant to a thread and allow them to see all messages on that thread from before they joined, so they can catch up on the conversation.
Codeigniter library to handle data in a parent-child hierarchy, using a "lineage" system to make page rendering a breeze. Read more about it here
A simple function to determine what type of credit card is being used based on the card number. I made some attempt to order checks by popularity of the cards & to reduce the number of checks used, rather than the more traditional "brute force" method of running it through a series of regex's. Uses a Luhn (mod 10) algorithm to check validity of card.