Is it advisable to integrate the logic for redirecting users to different pages directly into the main page instead of using a separate PHP script?

It is not advisable to integrate the logic for redirecting users directly into the main page as it can clutter the code and make it harder to maintain. It is better to use a separate PHP script for handling redirects to keep the code organized and easier to manage.

// Redirect users to a different page using a separate PHP script
header("Location: newpage.php");
exit();