public function getAuthorizeUrl($client_id, $redirect_url, $scope = '')
{
$additional_args = array();
if ($scope != '') {
if (is_array($scope)) {
$additional_args['scope'] = implode(' ', $scope);
$additional_args['scope'] = $additional_args['scope'];
} else {
$additional_args['scope'] = $scope;
}
}
$additional_args['state'] = md5(time());
return parent::getAuthorizeUrl($client_id, $redirect_url, $additional_args);
}