/**
 * 禁止非管理员访问后台并限制访问后台登录注册
 * @package bertly
 */
function redirect_non_admin_users() {
	if ( ! current_user_can( 'manage_options' ) && '/wp-admin/admin-ajax.php' != $_SERVER['PHP_SELF'] ) {
		wp_redirect( home_url() );
		exit;
	}
}
add_action( 'admin_init', 'redirect_non_admin_users' );
add_action('login_enqueue_scripts','login_protection');
    function login_protection(){
        header('Location: /');
    }
/**
 * End
 */