/**
* Delete all expired sessions from persistent storage.
*
* @param int $expiration
*
* @return mixed|void
*/
public function clean($expiration)
{
$sth = $this->pdo->prepare("DELETE FROM sessions WHERE last_activity < :expiration");
$sth->bindValue(':expiration', $expiration);
$sth->execute();
}
/**
* Delete an item from the cache.
*
* @param string $key
*
* @return boolean
*/
public function forget($key)
{
$sth = $this->pdo->prepare("DELETE FROM pimf_cache WHERE key = :key");
$sth->bindValue(':key', $this->key . $key);
return $sth->execute();
}
