function __construct($api_key, $api_secret)
{
$this->api_key = $api_key;
$this->api_secret = $api_secret;
$this->auth_mode = 'api';
parent::__construct();
}
function __construct($api_client_id, $api_client_secret, $redirect_uri, $access_token = null)
{
$this->api_client_id = $api_client_id;
$this->api_client_secret = $api_client_secret;
$this->oauth_redirect_uri = $redirect_uri;
$this->SetAccessToken($access_token);
$this->auth_mode = 'oauth';
parent::__construct();
}