What are some best practices for tracking user activity and determining if a user has left the website in PHP?

One way to track user activity and determine if a user has left the website in PHP is to use session variables. You can set a timestamp in the session when the user accesses the website and then check if the user has been inactive for a certain period of time. If the user has been inactive for that period, you can consider them as having left the website. 

// Start or resume the session
session_start();

// Set the user's last activity time in the session
$_SESSION['last_activity'] = time();

// Check if the user has been inactive for a certain period (e.g. 30 minutes)
$inactive_time = 30 * 60; // 30 minutes in seconds
if (isset($_SESSION['last_activity']) && (time() - $_SESSION['last_activity'] > $inactive_time)) {
    // User has left the website
    // Perform any necessary actions (e.g. log out the user)
}

Keywords

session management user activity tracking website abandonment detection PHP cookies event tracking

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