Title: Translations::set_header
Published: April 25, 2014
Last modified: May 20, 2026

---

# Translations::set_header( string $header, string $value )

## In this article

 * [Description](https://developer.wordpress.org/reference/classes/translations/set_header/?output_format=md#description)
 * [Parameters](https://developer.wordpress.org/reference/classes/translations/set_header/?output_format=md#parameters)
 * [Source](https://developer.wordpress.org/reference/classes/translations/set_header/?output_format=md#source)
 * [Related](https://developer.wordpress.org/reference/classes/translations/set_header/?output_format=md#related)
 * [Changelog](https://developer.wordpress.org/reference/classes/translations/set_header/?output_format=md#changelog)

[ Back to top](https://developer.wordpress.org/reference/classes/translations/set_header/?output_format=md#wp--skip-link--target)

Sets $header PO header to $value

## 󠀁[Description](https://developer.wordpress.org/reference/classes/translations/set_header/?output_format=md#description)󠁿

If the header already exists, it will be overwritten

TODO: this should be out of this class, it is gettext specific

## 󠀁[Parameters](https://developer.wordpress.org/reference/classes/translations/set_header/?output_format=md#parameters)󠁿

 `$header`stringrequired

header name, without trailing :

`$value`stringrequired

header value, without trailing n

## 󠀁[Source](https://developer.wordpress.org/reference/classes/translations/set_header/?output_format=md#source)󠁿

    ```php
    public function set_header( $header, $value ) {
    	$this->headers[ $header ] = $value;
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/pomo/translations.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/7.0/src/wp-includes/pomo/translations.php#L96)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/pomo/translations.php#L96-L98)

## 󠀁[Related](https://developer.wordpress.org/reference/classes/translations/set_header/?output_format=md#related)󠁿

| Used by | Description | 
| [Gettext_Translations::set_header()](https://developer.wordpress.org/reference/classes/gettext_translations/set_header/)`wp-includes/pomo/translations.php` |

Sets translation headers.

  | 
| [Translations::set_headers()](https://developer.wordpress.org/reference/classes/translations/set_headers/)`wp-includes/pomo/translations.php` |

Sets translation headers.

  |

## 󠀁[Changelog](https://developer.wordpress.org/reference/classes/translations/set_header/?output_format=md#changelog)󠁿

| Version | Description | 
| [2.8.0](https://developer.wordpress.org/reference/since/2.8.0/) | Introduced. |

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