Are there any best practices or recommended tutorials for implementing framebusters in PHP to ensure consistent functionality?

Framebusters are used to prevent a website from being displayed within an iframe, which can help prevent clickjacking attacks. One recommended way to implement framebusters in PHP is to use JavaScript to break out of frames. By including a script in your PHP file that checks if the page is being loaded within a frame and redirects to the top-level window if it is, you can ensure consistent functionality across browsers.

<?php
echo '<script>';
echo 'if (top != self) { top.location.replace(self.location.href); }';
echo '</script>';
?>