Title: HeadersCollection::__construct
Published: May 20, 2026

---

# HeadersCollection::__construct( $headers = [] )

## In this article

 * [Parameters](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-collections-headerscollection/__construct/?output_format=md#parameters)
 * [Source](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-collections-headerscollection/__construct/?output_format=md#source)
 * [Related](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-collections-headerscollection/__construct/?output_format=md#related)
 * [Changelog](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-collections-headerscollection/__construct/?output_format=md#changelog)

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

Constructor.

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

`string|list`<string>> $headers Initial headers.

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

    ```php
    public function __construct(array $headers = [])
    {
        foreach ($headers as $name => $value) {
            $this->set($name, $value);
        }
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/php-ai-client/src/providers/http/collections/headerscollection.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/7.0/src/wp-includes/php-ai-client/src/Providers/Http/Collections/HeadersCollection.php#L31)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/php-ai-client/src/Providers/Http/Collections/HeadersCollection.php#L31-L36)

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

| Uses | Description | 
| [HeadersCollection::set()](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-collections-headerscollection/set/)`wp-includes/php-ai-client/src/Providers/Http/Collections/HeadersCollection.php` |

Sets a header value, replacing any existing value.

  |

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

Constructor.

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

Constructor.

  |

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

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

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