WordPress at a glance
function is not described

wc_send_frame_options_header() WC 2.3.10

When loading sensitive checkout or account pages, send a HTTP header to limit rendering of pages to same origin iframes for security reasons.

Can be disabled with: remove_action( 'template_redirect', 'wc_send_frame_options_header' );

No Hooks.

Return

null. Nothing.

Usage

wc_send_frame_options_header();

Changelog

Since 2.3.10 Introduced.

Code of wc_send_frame_options_header() WC 5.3.0

<?php
function wc_send_frame_options_header() {

	if ( ( is_checkout() || is_account_page() ) && ! is_customize_preview() ) {
		send_frame_options_header();
	}
}