Title: WP_Interactivity_API::kebab_to_camel_case
Published: April 3, 2024
Last modified: February 24, 2026

---

# WP_Interactivity_API::kebab_to_camel_case( string $str ): string

## In this article

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

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

This function’s access is marked private. This means it is not intended for use 
by plugin or theme developers, only by core. It is listed here for completeness.

Transforms a kebab-case string to camelCase.

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

 `$str`stringrequired

The kebab-case string to transform to camelCase.

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

 string The transformed camelCase string.

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

    ```php
    private function kebab_to_camel_case( string $str ): string {
    	return lcfirst(
    		preg_replace_callback(
    			'/(-)([a-z])/',
    			function ( $matches ) {
    				return strtoupper( $matches[2] );
    			},
    			strtolower( rtrim( $str, '-' ) )
    		)
    	);
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/interactivity-api/class-wp-interactivity-api.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/6.9.4/src/wp-includes/interactivity-api/class-wp-interactivity-api.php#L928)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/interactivity-api/class-wp-interactivity-api.php#L928-L938)

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

| Used by | Description | 
| [WP_Interactivity_API::data_wp_each_processor()](https://developer.wordpress.org/reference/classes/wp_interactivity_api/data_wp_each_processor/)`wp-includes/interactivity-api/class-wp-interactivity-api.php` |

Processes the `data-wp-each` directive.

  |

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

| Version | Description | 
| [6.5.0](https://developer.wordpress.org/reference/since/6.5.0/) | Introduced. |

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