wp_initialize_site_preview_hooks() │ WP 6.8.0

Initialize site preview.

This function sets IFRAME_REQUEST to true if the site preview parameter is set.

No Hooks.

Returns

null. Nothing (null).

Usage

wp_initialize_site_preview_hooks();

Changelog

Since 6.8.0 Introduced.

wp_initialize_site_preview_hooks() code WP 7.0

wp-includes/block-editor.php 
function wp_initialize_site_preview_hooks() {
	if (
		! defined( 'IFRAME_REQUEST' ) &&
		isset( $_GET['wp_site_preview'] ) &&
		1 === (int) $_GET['wp_site_preview'] &&
		current_user_can( 'edit_theme_options' )
	) {
		define( 'IFRAME_REQUEST', true );
	}
}