Title: WP_Block_Patterns_Registry::is_registered
Published: August 11, 2020
Last modified: February 24, 2026

---

# WP_Block_Patterns_Registry::is_registered( string|null $pattern_name ): bool

## In this article

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

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

Checks if a block pattern is registered.

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

 `$pattern_name`string|nullrequired

Block pattern name including namespace.

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

 bool True if the pattern is registered, false otherwise.

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

    ```php
    public function is_registered( $pattern_name ) {
    	return isset( $pattern_name, $this->registered_patterns[ $pattern_name ] );
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/class-wp-block-patterns-registry.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/6.9.4/src/wp-includes/class-wp-block-patterns-registry.php#L244)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/class-wp-block-patterns-registry.php#L244-L246)

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

| Used by | Description | 
| [WP_Block_Patterns_Registry::unregister()](https://developer.wordpress.org/reference/classes/wp_block_patterns_registry/unregister/)`wp-includes/class-wp-block-patterns-registry.php` |

Unregisters a block pattern.

  | 
| [WP_Block_Patterns_Registry::get_registered()](https://developer.wordpress.org/reference/classes/wp_block_patterns_registry/get_registered/)`wp-includes/class-wp-block-patterns-registry.php` |

Retrieves an array containing the properties of a registered block pattern.

  |

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

| Version | Description | 
| [5.5.0](https://developer.wordpress.org/reference/since/5.5.0/) | Introduced. |

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