Title: MessageBuilder::__clone
Published: May 20, 2026

---

# MessageBuilder::__clone()

## In this article

 * [Description](https://developer.wordpress.org/reference/classes/wordpress-aiclient-builders-messagebuilder/__clone/?output_format=md#description)
 * [Source](https://developer.wordpress.org/reference/classes/wordpress-aiclient-builders-messagebuilder/__clone/?output_format=md#source)
 * [Changelog](https://developer.wordpress.org/reference/classes/wordpress-aiclient-builders-messagebuilder/__clone/?output_format=md#changelog)

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

Creates a deep clone of this builder.

## 󠀁[Description](https://developer.wordpress.org/reference/classes/wordpress-aiclient-builders-messagebuilder/__clone/?output_format=md#description)󠁿

Clones all MessagePart objects in the parts array to ensure the cloned builder is
independent of the original.

## 󠀁[Source](https://developer.wordpress.org/reference/classes/wordpress-aiclient-builders-messagebuilder/__clone/?output_format=md#source)󠁿

    ```php
    public function __clone()
    {
        // Deep clone parts array (MessagePart has __clone)
        $clonedParts = [];
        foreach ($this->parts as $part) {
            $clonedParts[] = clone $part;
        }
        $this->parts = $clonedParts;
        // Note: $role is an enum value object and can be safely shared
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/php-ai-client/src/builders/messagebuilder.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/7.0/src/wp-includes/php-ai-client/src/Builders/MessageBuilder.php#L74)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/php-ai-client/src/Builders/MessageBuilder.php#L74-L83)

## 󠀁[Changelog](https://developer.wordpress.org/reference/classes/wordpress-aiclient-builders-messagebuilder/__clone/?output_format=md#changelog)󠁿

| Version | Description | 
| [0.4.2](https://developer.wordpress.org/reference/since/0.4.2/) | Introduced. |

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