/**
* Return an array of metadatas for the given cache id
*
* The array must include these keys :
* - expire : the expire timestamp
* - tags : a string array of tags
* - mtime : timestamp of last modification time
*
* @param string $id cache id
* @return array array of metadatas (false if the cache id is not found)
*/
public function getMetadatas($id)
{
list($tags, $mtime, $inf) = $this->_redis->hMGet(self::PREFIX_KEY . $id, array(self::FIELD_TAGS, self::FIELD_MTIME, self::FIELD_INF));
if (!$mtime) {
return FALSE;
}
$tags = explode(',', $this->_decodeData($tags));
$expire = $inf === '1' ? FALSE : time() + $this->_redis->ttl(self::PREFIX_KEY . $id);
return array('expire' => $expire, 'tags' => $tags, 'mtime' => $mtime);
}
