Title: wp_initialize_site
Published: February 22, 2019
Last modified: February 24, 2026

---

# do_action( ‘wp_initialize_site’, WP_Site $new_site, array $args )

## In this article

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

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

Fires when a site’s initialization routine should be executed.

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

 `$new_site`[WP_Site](https://developer.wordpress.org/reference/classes/wp_site/)

New site object.

`$args`array

Arguments for the initialization.

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

    ```php
    do_action( 'wp_initialize_site', $new_site, $args );
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/ms-site.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/6.9.4/src/wp-includes/ms-site.php#L105)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/ms-site.php#L105-L105)

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

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

Inserts a new site into the database.

  |

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

| Version | Description | 
| [5.1.0](https://developer.wordpress.org/reference/since/5.1.0/) | Introduced. |

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