Title: WP_REST_Request::set_body
Published: December 9, 2015
Last modified: May 20, 2026

---

# WP_REST_Request::set_body( string $data )

## In this article

 * [Parameters](https://developer.wordpress.org/reference/classes/wp_rest_request/set_body/?output_format=md#parameters)
 * [Source](https://developer.wordpress.org/reference/classes/wp_rest_request/set_body/?output_format=md#source)
 * [Changelog](https://developer.wordpress.org/reference/classes/wp_rest_request/set_body/?output_format=md#changelog)

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

Sets body content.

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

 `$data`stringrequired

Binary data from the request body.

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

    ```php
    public function set_body( $data ) {
    	$this->body = $data;

    	// Enable lazy parsing.
    	$this->parsed_json    = false;
    	$this->parsed_body    = false;
    	$this->params['JSON'] = null;
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/rest-api/class-wp-rest-request.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/7.0/src/wp-includes/rest-api/class-wp-rest-request.php#L653)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/rest-api/class-wp-rest-request.php#L653-L660)

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

| Version | Description | 
| [4.4.0](https://developer.wordpress.org/reference/since/4.4.0/) | Introduced. |

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