Create a PHP class using cURL to fetch and post data to a website -- 2

!!! DO NOT BID WITHOUT READING !!! We need a PHP script (class) with a simple and elegant function todo cURL on a website and perform some actions there. Specifications in attached file. Important: 1. Ask questions if you need more info. 2. We can't afford increasing the budget after awarding the project and the entire project will be canceled and restarted if you can't deliver 100%. 3. Budget is limited and time is critical. !!! DO NOT BID WITHOUT READING !!!