How can PHP be used to detect and handle inactive or idle users on a website?

To detect and handle inactive or idle users on a website, you can set a timestamp when a user performs an action on the website and then check if the user has been inactive for a certain period of time. If the user is inactive for too long, you can log them out or redirect them to a specific page. 

session_start();

$inactive_time = 300; // 5 minutes of inactivity
$session_expire = time() - $inactive_time;

if (isset($_SESSION['last_activity']) && $_SESSION['last_activity'] < $session_expire) {
    // Redirect user to logout or inactive page
    header("Location: logout.php");
    exit;
}

$_SESSION['last_activity'] = time();

Keywords

PHP user activity session management timeout detection

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