function favorites_tags_update($id, $tags)
{
$params = array();
$params['id'] = $id;
if (is_array($tags) && !empty($tags)) {
foreach ($tags as $k => $v) {
$this->id_format($tags[$k]);
}
$params['tags'] = join(',', $tags);
} else {
$params['tags'] = $tags;
}
return $this->oauth->post('favorites/tags/update', $params);
}