Nest::saveCache PHP Method

    private function saveCache()
    {
        $vars = array('transport_url' => $this->transport_url, 'access_token' => $this->access_token, 'user' => $this->user, 'userid' => $this->userid, 'cache_expiration' => $this->cache_expiration, 'last_status' => @$this->last_status);
        file_put_contents($this->cache_file, serialize($vars));
    }