$out = array();

$out['id'] = $data[0]->attribute->id;
$out['name'] = $data[0]->attribute->name;
$out['val_id'] = $data[0]->attributeValues[0]->id;
$out['val_name'] = $data[0]->attributeValues[0]->name;

print_r(json_encode($out));

$out = array();
for($i = 0; $i < count($data); $i++)
{
if($data[$i]->attributeValues)
{
for($x = 0; $x < count($data[$i]->attributeValues); $x++)
{
$out['val_id'][$i][$x] = $data[$i]->attributeValues[$x]->id;
$out['val_name'][$i][$x] = $data[$i]->attributeValues[$x]->name;
}
}
}

print_r(json_encode($out));