function __construct($key, $secret, $callback_url = NULL)
{
// check if the consumer is registered
$oAuthServerConsumersDAO = new OAuthServerConsumersDAO();
$consumer = $oAuthServerConsumersDAO->getByConsumerKeyAndSecret($key, $secret);
if (!is_array($consumer)) {
throw new OAuthException('Consumer is not registered.');
} else {
$this->key = $key;
$this->secret = $secret;
$this->callback_url = $callback_url;
}
}
