WordPress at a glance
function is not described

send_frame_options_header() WP 3.1.3

Send a HTTP header to limit rendering of pages to same origin iframes.

No Hooks.

Return

````. Null. Nothing.

Usage

send_frame_options_header();

Notes

Changelog

Since 3.1.3 Introduced.

Code of send_frame_options_header() WP 5.7

<?php
function send_frame_options_header() {
	header( 'X-Frame-Options: SAMEORIGIN' );
}