How to get to an array within an array?

Question

PHP

Hello. There is a function bp_profile_get_field_groups() , if you look at its contents using print_r , you can see a huge sheet with values, I will give just the beginning as an example:

Array
(
[0] => stdClass Object
(
[id] => 1
[name] => Base
[description] =>
[group_order] => 0
[can_delete] => 0
[fields] => Array
(
[0] => BP_XProfile_Field Object
(
[id] => 1
[group_id] => 1
[parent_id] => 0
[type] => textbox
[name] => ФИО
[description] =>
[is_required] => 1
[can_delete] => 0
[field_order] => 0
[option_order] => 0
[order_by] =>
[is_default_option] => 0
[default_visibility:protected] =>
[allow_custom_visibility:protected] =>
[do_autolink] =>
[type_obj] => BP_XProfile_Field_Type_Textbox Object
...

I suspect that [fields] => Array contains the values ​​I need (if I understand correctly, of course, that there is an array there).
Question:
How to get to this array and iterate over its values, or just see what's inside?

Answer 1

$data = bp_profile_get_field_groups();
var_dump($data[0]->fields);

not?