$pdo = $modx->getService('pdoFetch'); $countries = $pdo->getCollection('scCountries',array(), array('sortby' => '{"continent":"ASC","country":"ASC"}'));
$pdo = $modx->getService('pdoFetch'); $countries = $pdo->getCollection('scCountries',array(), array('sortby' => 'continent,country'));
This question has been answered by BobRay. See the first response.
array( 'sortby' => 'continent', 'sortdir' => 'asc', );
$c = $modx->newQuery('scCountries'); $c->sortby('continent', 'ASC'); $c->sortby('country', 'ASC'); $result = $modx->getCollection('ssCountries', $c);