Question

I would like to have a quiz with limited time for users to answer a question so they can’t google. Unfortunately, this time protection can easily be bypassed if I do it with client sided languages like JavaScript.
Is there a way to do this via PHP? It should be kind of secure.

Thanks in advance!

Answer 1

Sure, simply tell the user they have the set time to do it, and set a session variable like so:

session_start();
$_SESSION['to_be_completed_by'] = time() + 60;

As time() gets the current epoch time in seconds, here you’re giving the user a minute. And when they submit:

if($_SESSION['to_be_completed_by'] <= time()){
    // Completed within the limit
}else {
    // Not completed
}