Title: WP_Widget::_set
Published: April 25, 2014
Last modified: April 28, 2025

---

# WP_Widget::_set( int $number )

## In this article

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

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

Sets the internal order number for the widget instance.

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

 `$number`intrequired

The unique order number of this widget instance compared to other instances of the
same class.

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

    ```php
    public function _set( $number ) {
    	$this->number = $number;
    	$this->id     = $this->id_base . '-' . $number;
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/class-wp-widget.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/6.9.4/src/wp-includes/class-wp-widget.php#L287)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/class-wp-widget.php#L287-L290)

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

| Used by | Description | 
| [WP_Widget::display_callback()](https://developer.wordpress.org/reference/classes/wp_widget/display_callback/)`wp-includes/class-wp-widget.php` |

Generates the actual widget content (Do NOT override).

  | 
| [WP_Widget::update_callback()](https://developer.wordpress.org/reference/classes/wp_widget/update_callback/)`wp-includes/class-wp-widget.php` |

Handles changed settings (Do NOT override).

  | 
| [WP_Widget::form_callback()](https://developer.wordpress.org/reference/classes/wp_widget/form_callback/)`wp-includes/class-wp-widget.php` |

Generates the widget control form (Do NOT override).

  | 
| [WP_Widget::_register()](https://developer.wordpress.org/reference/classes/wp_widget/_register/)`wp-includes/class-wp-widget.php` |

Register all widget instances of this widget class.

  |

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

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

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