/**
* tag rendering
* @param [type] $data [description]
* @param array $params [description]
* @param boolean $tagdata [description]
* @return [type] [description]
*/
function replace_tag($data, $params = array(), $tagdata = FALSE)
{
$this->_cache_refresh();
$e = explode('|', $data);
if (count($e) != 5) {
$e = array('', '', '', '', '');
}
list($youtube_id, $cache_date, $title, $views, $since) = $e;
$y = new Youtube($this->settings['api_key'], $youtube_id);
$thumbnail_index = isset($params['thumbnail']) ? $params['thumbnail'] : '0';
$link = $this->_make_thumbnail($y->thumbnail_src($thumbnail_index), $y->embed(), $y->watch_url(), $title, $views, $since, $params);
return $link;
}