$d = $modx->newQuery('modResource');
$d->where(array(
'template' => 5,
//'parent:IN' => array(23,22,21,24,25,9)
'parent:IN' => array($parentIDs)
));
$prod = $modx->getCollection('modResource',$d);
$d = $modx->newQuery('modResource');
$d->where(array(
'template' => 5,
'parent:IN' => explode(',',$parentIDs),
));
$prod = $modx->getCollection('modResource',$d);