Create an Online Quiz/Examination Platform PHP + jQuery

Build a login system and quiz/examination platform where users can sign up and choose subjects/topics to take a quiz/exam on. They get to see their results immediately after the quiz. There will be means for uploading questions and choosing what subjects or topics to upload. There will also be means to restrict user access to some functionalities on the platform so that only Administrators have unrestricted access to upload or delete questions. The quiz system basically works by accepting user answers, cleaning up the answers to avoid any unwanted html tags and then comparing the inputed text answers to the correct answers already saved in the database. where there are differences, it then considers then to calculate the user's final score