How can I implement session timeout in PHP?

How can I implement session timeout in PHP?

You can implement session timeout in PHP by setting a time limit for user sessions. Typically, you check the last activity time and compare it with the current time.

Can you show me a code example?

Sure! Here's a simple example:

session_start();

// Set timeout duration in seconds
$timeout_duration = 1800; // 30 minutes

if (isset($_SESSION['LAST_ACTIVITY']) && (time() - $_SESSION['LAST_ACTIVITY'] > $timeout_duration)) {
    session_unset();     // unset $_SESSION variables
    session_destroy();   // destroy session
}

$_SESSION['LAST_ACTIVITY'] = time(); // update last activity time stamp

What happens if the session times out?

If the session times out, the user will be logged out, and any session data will be cleared. You can redirect them to a login page or show a timeout message.