wp_internal_hosts │ filter-hook │ WP 6.2.0

Filters the array of URL hosts which are considered internal.

Usage

add_filter( 'wp_internal_hosts', 'wp_kama_internal_hosts_filter' );

/**
 * Function for `wp_internal_hosts` filter-hook.
 * 
 * @param string[] $internal_hosts An array of internal URL hostnames.
 *
 * @return string[]
 */
function wp_kama_internal_hosts_filter( $internal_hosts ){

	// filter...
	return $internal_hosts;
}

$internal_hosts(string[])

An array of internal URL hostnames.

Changelog

Where the hook is called

$internal_hosts = apply_filters(
	'wp_internal_hosts',
	array(
		wp_parse_url( home_url(), PHP_URL_HOST ),
	)
);

Where the hook is used in WordPress