How can you implement a user online/offline status feature in a PHP community script using sessions or other methods?

To implement a user online/offline status feature in a PHP community script, you can use sessions to track when a user is active on the site. When a user logs in, set a session variable to indicate that they are online. When they log out or their session expires, update the variable to show that they are offline. You can display this status next to the user's profile or name to indicate their current online status.

// Start the session
session_start();

// When a user logs in, set the online status to true
$_SESSION['online'] = true;

// When a user logs out or the session expires, set the online status to false
$_SESSION['online'] = false;

// Display the user's online status on their profile page
if ($_SESSION['online']) {
    echo "Online";
} else {
    echo "Offline";
}