Title: WP_Block_Styles_Registry::get_instance
Published: November 12, 2019
Last modified: May 20, 2026

---

# WP_Block_Styles_Registry::get_instance(): 󠀁[WP_Block_Styles_Registry](https://developer.wordpress.org/reference/classes/wp_block_styles_registry/)󠁿

## In this article

 * [Description](https://developer.wordpress.org/reference/classes/wp_block_styles_registry/get_instance/?output_format=md#description)
 * [Return](https://developer.wordpress.org/reference/classes/wp_block_styles_registry/get_instance/?output_format=md#return)
 * [Source](https://developer.wordpress.org/reference/classes/wp_block_styles_registry/get_instance/?output_format=md#source)
 * [Related](https://developer.wordpress.org/reference/classes/wp_block_styles_registry/get_instance/?output_format=md#related)
 * [Changelog](https://developer.wordpress.org/reference/classes/wp_block_styles_registry/get_instance/?output_format=md#changelog)

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

Utility method to retrieve the main instance of the class.

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

The instance will be created if it does not exist yet.

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

 [WP_Block_Styles_Registry](https://developer.wordpress.org/reference/classes/wp_block_styles_registry/)
The main instance.

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

    ```php
    public static function get_instance() {
    	if ( null === self::$instance ) {
    		self::$instance = new self();
    	}

    	return self::$instance;
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/class-wp-block-styles-registry.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/7.0/src/wp-includes/class-wp-block-styles-registry.php#L198)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/class-wp-block-styles-registry.php#L198-L204)

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

| Used by | Description | 
| [WP_Theme_JSON_Resolver::inject_variations_from_block_styles_registry()](https://developer.wordpress.org/reference/classes/wp_theme_json_resolver/inject_variations_from_block_styles_registry/)`wp-includes/class-wp-theme-json-resolver.php` |

Adds variations sourced from the block styles registry to the supplied theme.json data.

  | 
| [WP_Theme_JSON::get_blocks_metadata()](https://developer.wordpress.org/reference/classes/wp_theme_json/get_blocks_metadata/)`wp-includes/class-wp-theme-json.php` |

Returns the metadata for each block.

  | 
| [WP_REST_Block_Types_Controller::__construct()](https://developer.wordpress.org/reference/classes/wp_rest_block_types_controller/__construct/)`wp-includes/rest-api/endpoints/class-wp-rest-block-types-controller.php` |

Constructor.

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

Function responsible for enqueuing the styles required for block styles functionality on the editor and on the frontend.

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

Function responsible for enqueuing the assets required for block styles functionality on the editor.

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

Registers a new block style.

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

Unregisters a block style.

  |

[Show 2 more](https://developer.wordpress.org/reference/classes/wp_block_styles_registry/get_instance/?output_format=md#)
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## 󠀁[Changelog](https://developer.wordpress.org/reference/classes/wp_block_styles_registry/get_instance/?output_format=md#changelog)󠁿

| Version | Description | 
| [5.3.0](https://developer.wordpress.org/reference/since/5.3.0/) | Introduced. |

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