Title: Request::getHeader
Published: May 20, 2026

---

# Request::getHeader( string $name ): WordPressAiClientProvidersHttpDTOlist<string>|null

## In this article

 * [Parameters](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-dto-request/getheader/?output_format=md#parameters)
 * [Return](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-dto-request/getheader/?output_format=md#return)
 * [Source](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-dto-request/getheader/?output_format=md#source)
 * [Related](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-dto-request/getheader/?output_format=md#related)
 * [Changelog](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-dto-request/getheader/?output_format=md#changelog)

[ Back to top](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-dto-request/getheader/?output_format=md#wp--skip-link--target)

Gets a specific header value.

## 󠀁[Parameters](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-dto-request/getheader/?output_format=md#parameters)󠁿

 `$name`stringrequired

The header name (case-insensitive).

## 󠀁[Return](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-dto-request/getheader/?output_format=md#return)󠁿

 WordPressAiClientProvidersHttpDTOlist<string>|null The header value(s) or null 
if not found.

## 󠀁[Source](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-dto-request/getheader/?output_format=md#source)󠁿

    ```php
    public function getHeader(string $name): ?array
    {
        return $this->headers->get($name);
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/php-ai-client/src/providers/http/dto/request.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/7.0/src/wp-includes/php-ai-client/src/Providers/Http/DTO/Request.php#L158)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/php-ai-client/src/Providers/Http/DTO/Request.php#L158-L161)

## 󠀁[Related](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-dto-request/getheader/?output_format=md#related)󠁿

| Used by | Description | 
| [Request::getContentType()](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-dto-request/getcontenttype/)`wp-includes/php-ai-client/src/Providers/Http/DTO/Request.php` |

Gets the Content-Type header value.

  |

## 󠀁[Changelog](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-dto-request/getheader/?output_format=md#changelog)󠁿

| Version | Description | 
| [0.1.0](https://developer.wordpress.org/reference/since/0.1.0/) | Introduced. |

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