What are the potential pitfalls of relying solely on session IDs for user activity tracking in PHP?

Relying solely on session IDs for user activity tracking in PHP can lead to inaccurate data if sessions expire or are not properly managed. To ensure more accurate tracking, it is recommended to also store user activity data in a database alongside session IDs. 

// Store user activity data in database alongside session ID
$userId = $_SESSION['user_id'];
$activity = "User clicked on a button";
$timestamp = time();

// Connect to database
$connection = new mysqli('localhost', 'username', 'password', 'database');

// Insert user activity data into database
$query = "INSERT INTO user_activity (user_id, activity, timestamp) VALUES ('$userId', '$activity', '$timestamp')";
$connection->query($query);

// Close database connection
$connection->close();

Keywords

session IDs user activity tracking PHP security vulnerabilities session hijacking

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