/**
* Return an array of stored cache ids which match any given tags
*
* In case of multiple tags, a logical OR is made between tags
*
* @param array $tags array of tags
* @return array array of any matching cache ids (string)
*/
public function getIdsMatchingAnyTags($tags = array())
{
$ids = array();
if (!empty($tags)) {
$tags = $this->_preprocessTagIds($tags);
// $this->_redis->sUnion
foreach ($tags as $oneTag) {
$ids = array_merge($ids, $this->_preprocessIds($this->_redis->smembers($oneTag)));
}
}
return $ids;
}
