wp_favicon_request() │ WP 3.0.0

Deprecated since 5.4.0 Deprecated in favor of do_favicon().. It is no longer supported and may be removed in future releases. It is recommended to replace this function with the same one.

Ensures all of WordPress is not loaded when handling a favicon.ico request.

Instead, send the headers for a zero-length favicon and bail.

No Hooks.

Returns

null. Nothing (null).

Usage

wp_favicon_request();

Changelog

Since 3.0.0 Introduced.
Deprecated since 5.4.0 Deprecated in favor of do_favicon().

wp_favicon_request() code WP 6.8.1

wp-includes/load.php 
function wp_favicon_request() {
	if ( '/favicon.ico' === $_SERVER['REQUEST_URI'] ) {
		header( 'Content-Type: image/vnd.microsoft.icon' );
		exit;
	}
}