Result object for database query.
The database is not actually queried until next() or hasNext() is called. Before the database is queried, commands can be strung together, as in:
<?php $cursor = $collection->find()->limit(10); // database has not yet been queried, so more search options can be added $cursor = $cursor->sort(array("a" => 1)); var_dump($cursor->getNext()); // now database has been queried and more options cannot be added // so this will throw an exception: $cursor->skip(4); ?>