wp_logout example

setcookie( 'wp-postpass_' . COOKIEHASH, $hasher->HashPassword( wp_unslash( $_POST['post_password'] ) ), $expire, COOKIEPATH, COOKIE_DOMAIN, $secure );

        wp_safe_redirect( wp_get_referer() );
        exit;

    case 'logout':
        check_admin_referer( 'log-out' );

        $user = wp_get_current_user();

        wp_logout();

        if ( ! empty( $_REQUEST['redirect_to'] ) ) {
            $redirect_to           = $_REQUEST['redirect_to'];
            $requested_redirect_to = $redirect_to;
        } else {
            $redirect_to = add_query_arg(
                array(
                    'loggedout' => 'true',
                    'wp_lang'   => get_user_locale( $user ),
                ),
                wp_login_url()
            );