How can proper file permissions help protect PHP code from being accessed by unauthorized users?

Proper file permissions can help protect PHP code from being accessed by unauthorized users by restricting access to files only to those who have the necessary permissions. By setting the correct permissions on PHP files, you can prevent unauthorized users from viewing or executing the code, thus safeguarding sensitive information and preventing security breaches.

// Set file permissions to restrict access to PHP files
chmod("example.php", 0600);