wp_redirect_admin_locations() WordPress Function

function wp_redirect_admin_locations() {
	global $wp_rewrite;

	if ( ! ( is_404() && $wp_rewrite->using_permalinks() ) ) {
		return;
	}

	$admins = array(
		home_url( 'wp-admin', 'relative' ),
		home_url( 'dashboard', 'relative' ),
		home_url( 'admin', 'relative' ),
		site_url( 'dashboard', 'relative' ),
		site_url( 'admin', 'relative' ),
	);

	if ( in_array( untrailingslashit( $_SERVER['REQUEST_URI'] ), $admins, true ) ) {
		wp_redirect( admin_url() );
		exit;
	}

	$logins = array(
		home_url( 'wp-login.php', 'relative' ),
		home_url( 'login', 'relative' ),
		site_url( 'login', 'relative' ),
	);

	if ( in_array( untrailingslashit( $_SERVER['REQUEST_URI'] ), $logins, true ) ) {
		wp_redirect( wp_login_url() );
		exit;
	}
}
Uses	Description
wp-includes/formatting.php:untrailingslashit()	Removes trailing forward slashes and backslashes if they exist.
wp-includes/pluggable.php:wp_redirect()	Redirects to another page.
wp-includes/general-template.php:wp_login_url()	Retrieves the login URL.
wp-includes/query.php:is_404()	Determines whether the query has resulted in a 404 (returns no results).
wp-includes/link-template.php:admin_url()	Retrieves the URL to the admin area for the current site.
wp-includes/link-template.php:home_url()	Retrieves the URL for the current site where the front end is accessible.
wp-includes/link-template.php:site_url()	Retrieves the URL for the current site where WordPress application files (e.g. wp-blog-header.php or the wp-admin/ folder) are accessible.
wp-includes/class-wp-rewrite.php:WP_Rewrite::using_permalinks()	Determines whether permalinks are being used.