> For the complete documentation index, see [llms.txt](https://docs.acpt.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.acpt.io/developers/functions/get_acpt_block_child_field.md).

# get\_acpt\_block\_child\_field

Fetch a field value nested inside a Flexible Content block

Fetch a single field value from within a Flexible Content block.

### Usage

```php
$value = get_acpt_block_child_field([
    'post_id'           => 123,
    'box_name'          => 'box',
    'field_name'        => 'title',
    'parent_field_name' => 'flexible_field',
    'index'             => 0,
    'block_name'        => 'text_image',
    'block_index'       => 0,
]);
```

### Parameters

| Parameter              | Type              | Required                 | Description                                                                                                                            |
| ---------------------- | ----------------- | ------------------------ | -------------------------------------------------------------------------------------------------------------------------------------- |
| `post_id`              | integer           | Conditional              | The post ID                                                                                                                            |
| `term_id`              | integer           | Conditional              | The term ID                                                                                                                            |
| `user_id`              | integer           | Conditional              | The user ID                                                                                                                            |
| `comment_id`           | integer           | Not currently functional | Accepted, but see warning below                                                                                                        |
| `wc_product_attribute` | integer           | Conditional              | The WooCommerce product attribute ID (also accepted as `wcProductAttribute`)                                                           |
| `option_page`          | string            | Conditional              | The option page slug                                                                                                                   |
| `box_name`             | string            | Required                 | The meta box name                                                                                                                      |
| `field_name`           | string            | Required                 | The child field name                                                                                                                   |
| `parent_field_name`    | string            | Required                 | The parent Flexible Content field name. Also accepted as `parentFieldName`                                                             |
| `index`                | string \| integer | Required                 | The field's index within the block                                                                                                     |
| `block_name`           | string            | Optional                 | The parent block name. Also accepted as `blockName`. Use dot notation (e.g. `outer.inner`) for a block nested inside another block     |
| `block_index`          | string \| integer | Optional                 | Zero-based index of the block within its parent field. Also accepted as `blockIndex`. Use dot notation (e.g. `0.1`) for a nested block |
| `with_context`         | boolean           | Optional                 | Wrap the returned value in a `{before, value, after}` object                                                                           |
| `format`               | string            | Optional                 | `only_value` (default) or `complete`                                                                                                   |
| `return`               | string            | Optional                 | `object` (default) or `raw`                                                                                                            |

Exactly one of `post_id`, `term_id`, `user_id`, `option_page`, or `wc_product_attribute` must be provided to identify the location.

{% hint style="warning" %}
`comment_id` is accepted without a validation error, but is currently **not** wired to any location resolution in this function — passing only `comment_id` returns `null`.
{% endhint %}

### Return

| Type    | Description                                               |
| ------- | --------------------------------------------------------- |
| `mixed` | The field value in its native PHP type                    |
| `null`  | If the field or block does not exist at the given indices |