Falcon_Manager::validate_sites PHP Метод

    public static function validate_sites($value)
    {
        $value = (array) $value;
        $sites = self::available_sites();
        $site_ids = wp_list_pluck($sites, 'blog_id');
        // Ensure all values are available
        $sanitized = array_values(array_intersect($value, $site_ids));
        $sanitized = array_map('absint', $sanitized);
        return $sanitized;
    }