--TEST-- MongoDB\BSON\PackedArray::toPHP(): Unserializable as root type --FILE-- data = $data; } } $packedArray = MongoDB\BSON\PackedArray::fromPHP([1, 2, 3]); var_dump($packedArray->toPHP(['root' => MyArray::class])); ?> ===DONE=== --EXPECTF-- object(MyArray)#%d (%d) { ["data"]=> array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) } } ===DONE===