How can the header function be used to redirect to a different page outside of a frame in PHP?

To redirect to a different page outside of a frame in PHP using the header function, you can set the "X-Frame-Options" header to "DENY" before using the header function to redirect. This will prevent the page from being displayed within an iframe. 

header("X-Frame-Options: DENY");
header("Location: https://www.example.com/new_page.php");
exit();

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header function redirect frame PHP page

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