How can you ensure that session data is properly cleared when a user navigates through multiple pages on a website?

When a user navigates through multiple pages on a website, session data may accumulate and not be cleared properly, leading to potential security risks or performance issues. To ensure session data is properly cleared, you can use session_unset() function to clear all session variables before a user navigates to a new page.

// Clear all session variables before navigating to a new page
session_unset();