An online payment processing system consisting of a custom PHP payment receipt page(s) and an [url removed, login to view] gateway has developed a glitch. The system has been working without error for about a year. Communications between the two systems appears to be working, but instead of reporting the correct amount, the [url removed, login to view] page that charges the credit card account is reporting "$0.01". I need someone to review the relationship between the two systems, find the bug, repair it and document the effort. If you have considerable payment gateway and PHP experience, this should be a walk in the park for you. I have attached the PHP file for your review.
1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done.
2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables):
a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment.
b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request.
3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement).