WordPress force user logout - destroy all user sessions

Actions.php

add_action('admin_init', 'wpt_force_logout', 15);
function wpt_force_logout() {
    $action = isset($_GET['action']) ? strtolower($_GET['action']) : false;
    if (!$action || 'wpt-logout' !== $action) {
        return;
    }

    $user_id = isset($_GET['user_id']) ? absint($_GET['user_id']) : false;
    if (!$user_id || empty(trim($user_id))) {
        return;
    }

    // Just admins can do this operation
    if (!current_user_can('manage_options')) {
        return;
    }

    $user = get_user_by('id', $user_id);
    if (!$user) {
        return;
    }

    // get all sessions for user with ID $user_id
    $sessions = \WP_Session_Tokens::get_instance($user_id);
    // we have got the sessions, destroy them all!
    $sessions->destroy_all();

    wp_safe_redirect(admin_url());
    exit();
}