WP_Session::write_data PHP Method

    public function write_data()
    {
        $option_key = "_wp_session_{$this->session_id}";
        if (false === get_option($option_key)) {
            add_option("_wp_session_{$this->session_id}", $this->container, '', 'no');
            add_option("_wp_session_expires_{$this->session_id}", $this->expires, '', 'no');
        } else {
            delete_option("_wp_session_{$this->session_id}");
            add_option("_wp_session_{$this->session_id}", $this->container, '', 'no');
        }
    }