Title: http_request_host_is_external
Published: April 25, 2014
Last modified: February 24, 2026

---

# apply_filters( ‘http_request_host_is_external’, bool $external, string $host, string $url )

## In this article

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

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

Checks if HTTP request is external or not.

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

Allows to change and allow external requests for the HTTP request.

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

 `$external`bool

Whether HTTP request is external or not.

`$host`string

Host name of the requested URL.

`$url`string

Requested URL.

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

    ```php
    if ( ! apply_filters( 'http_request_host_is_external', false, $host, $url ) ) {
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/http.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/6.9.4/src/wp-includes/http.php#L618)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/http.php#L618-L618)

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

| Used by | Description | 
| [wp_http_validate_url()](https://developer.wordpress.org/reference/functions/wp_http_validate_url/)`wp-includes/http.php` |

Validates a URL as safe for use in the HTTP API.

  |

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

| Version | Description | 
| [3.6.0](https://developer.wordpress.org/reference/since/3.6.0/) | Introduced. |

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