$r = dba::select('tokens', ['id', 'secret'], ['client_id' => $consumer->key, 'id' => $nonce, 'expires' => $timestamp], ['limit' => 1]);
if (DBM::is_result($r)) {
$r = dba::select('tokens', ['id', 'secret'], ['client_id' => $consumer->key, 'id' => $nonce, 'expires' => $timestamp], ['limit' => 1]);
if (DBM::is_result($r)) {