What are some best practices for handling user activity monitoring in a PHP community script?

Issue: User activity monitoring is important for community scripts to ensure user engagement and identify any suspicious behavior. Best practices include tracking user logins, post/comment creation, profile updates, and any other relevant actions. Code snippet:

// Track user login activity
function track_login_activity($user_id) {
    // Insert a record into the 'user_activity' table with the user_id, activity_type, and timestamp
}

// Track post/comment creation activity
function track_post_activity($user_id, $post_id) {
    // Insert a record into the 'user_activity' table with the user_id, activity_type, post_id, and timestamp
}

// Track profile update activity
function track_profile_activity($user_id) {
    // Insert a record into the 'user_activity' table with the user_id, activity_type, and timestamp
}

// Example of tracking user login activity
$user_id = 123;
track_login_activity($user_id);