SG Project 2 - Repair and complete code

This is a repair job, completing the coding and testing that a previous developer failed to do. The primary purpose of this orignal project was to setup secure payment through Paypal and add related member registration functions. The project is nearly complete and the Paypal transaction setup appears to work. However, there are enough bugs such that nearly every component requires code examination/improvement and testing. For example, payment is processed but the database does not update accordingly even though it had worked at one point. Database tables and .php pages have already been created. Required programming functions are fully detailed in the attached document. The document contains notes regarding the previous developer's work. General Requirements • Review documentation and existing coded pages to complete/improve required functions using PHP and Java Script/DHMTL as appropriate to the functioning of the site. I believe only php is required for this part however. • Test the coded functions. • Improve/complete draft database table schema for efficient design for storage and queries. • Comment/document code for ease of use in post project management, and provide other documentation as necessary to maintain site and modify key values. • Modify web pages as necessary. English fluency. No deposit will be made for this small a project.