How can a Framekiller-Script affect PHP code?

A Framekiller-Script can prevent a webpage from being displayed within an iframe, which can affect PHP code if the PHP-generated content is intended to be displayed within an iframe. To solve this issue, you can include a Framekiller-Script in your PHP code to prevent your webpage from being displayed within an iframe. 

<?php
// Framekiller-Script to prevent webpage from being displayed within an iframe
header("X-Frame-Options: DENY");
?>

Keywords

Framekiller-Script PHP code security vulnerability iframe cross-origin communication

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