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

---

# is_blog_user( int $blog_id ): bool

## In this article

 * [Description](https://developer.wordpress.org/reference/functions/is_blog_user/?output_format=md#description)
    - [See also](https://developer.wordpress.org/reference/functions/is_blog_user/?output_format=md#see-also)
 * [Parameters](https://developer.wordpress.org/reference/functions/is_blog_user/?output_format=md#parameters)
 * [Return](https://developer.wordpress.org/reference/functions/is_blog_user/?output_format=md#return)
 * [Source](https://developer.wordpress.org/reference/functions/is_blog_user/?output_format=md#source)
 * [Related](https://developer.wordpress.org/reference/functions/is_blog_user/?output_format=md#related)
 * [Changelog](https://developer.wordpress.org/reference/functions/is_blog_user/?output_format=md#changelog)

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

This function has been deprecated since 3.3.0. Use [is_user_member_of_blog()](https://developer.wordpress.org/reference/functions/is_user_member_of_blog/)
instead.

Checks if the current user belong to a given site.

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

### 󠀁[See also](https://developer.wordpress.org/reference/functions/is_blog_user/?output_format=md#see-also)󠁿

 * [is_user_member_of_blog()](https://developer.wordpress.org/reference/functions/is_user_member_of_blog/)

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

 `$blog_id`intrequired

Site ID

## 󠀁[Return](https://developer.wordpress.org/reference/functions/is_blog_user/?output_format=md#return)󠁿

 bool True if the current users belong to $blog_id, false if not.

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

    ```php
    function is_blog_user( $blog_id = 0 ) {
    	_deprecated_function( __FUNCTION__, '3.3.0', 'is_user_member_of_blog()' );

    	return is_user_member_of_blog( get_current_user_id(), $blog_id );
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/deprecated.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/7.0/src/wp-includes/deprecated.php#L2843)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/deprecated.php#L2843-L2847)

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

| Uses | Description | 
| [is_user_member_of_blog()](https://developer.wordpress.org/reference/functions/is_user_member_of_blog/)`wp-includes/user.php` |

Finds out whether a user is a member of a given blog.

  | 
| [_deprecated_function()](https://developer.wordpress.org/reference/functions/_deprecated_function/)`wp-includes/functions.php` |

Marks a function as deprecated and inform when it has been used.

  | 
| [get_current_user_id()](https://developer.wordpress.org/reference/functions/get_current_user_id/)`wp-includes/user.php` |

Gets the current user’s ID.

  |

[Show 1 more](https://developer.wordpress.org/reference/functions/is_blog_user/?output_format=md#)
[Show less](https://developer.wordpress.org/reference/functions/is_blog_user/?output_format=md#)

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

| Version | Description | 
| [3.3.0](https://developer.wordpress.org/reference/since/3.3.0/) | Deprecated. Use [is_user_member_of_blog()](https://developer.wordpress.org/reference/functions/is_user_member_of_blog/)  | 
| [MU (3.0.0)](https://developer.wordpress.org/reference/since/mu.3.0.0/) | Introduced. |

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