Title: _get_widget_id_base
Published: April 25, 2014
Last modified: April 28, 2025

---

# _get_widget_id_base( string $id ): string

## In this article

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

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

Retrieves the widget ID base value.

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

 `$id`stringrequired

Widget ID.

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

 string Widget ID base.

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

    ```php
    function _get_widget_id_base( $id ) {
    	return preg_replace( '/-[0-9]+$/', '', $id );
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/widgets.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/6.9.4/src/wp-includes/widgets.php#L1280)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/widgets.php#L1280-L1282)

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

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

Determines whether a given widget is displayed on the front end.

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

Registers an instance of a widget.

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

Registers widget control callback for customizing options.

  |

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

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

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