I'm currently working on a php+mysql web based project. The website is something like an online tuition center. So, I need to add a section for user to be able to do exercises or examinations online.
My problem is, I need a countdown timer or something like a time limit that limits the user to do the exercises/exams within 60minutes or 120 minutes (Prefer if time limit can be set).
Can you guys point me out which website that offers a code that would work like that? Or a sample code i can refer to, so that i can put this function in my website?
Thanks