Title: FunctionCall::__construct
Published: May 20, 2026

---

# FunctionCall::__construct( string|null $id = null, string|null $name = null, mixed $args = null )

## In this article

 * [Parameters](https://developer.wordpress.org/reference/classes/wordpress-aiclient-tools-dto-functioncall/__construct/?output_format=md#parameters)
 * [Source](https://developer.wordpress.org/reference/classes/wordpress-aiclient-tools-dto-functioncall/__construct/?output_format=md#source)
 * [Related](https://developer.wordpress.org/reference/classes/wordpress-aiclient-tools-dto-functioncall/__construct/?output_format=md#related)
 * [Changelog](https://developer.wordpress.org/reference/classes/wordpress-aiclient-tools-dto-functioncall/__construct/?output_format=md#changelog)

[ Back to top](https://developer.wordpress.org/reference/classes/wordpress-aiclient-tools-dto-functioncall/__construct/?output_format=md#wp--skip-link--target)

Constructor.

## 󠀁[Parameters](https://developer.wordpress.org/reference/classes/wordpress-aiclient-tools-dto-functioncall/__construct/?output_format=md#parameters)󠁿

 `$id`string|nulloptional

Unique identifier for this function call.

Default:`null`

`$name`string|nulloptional

The name of the function to call.

Default:`null`

`$args`mixedoptional

The arguments to pass to the function.

Default:`null`

## 󠀁[Source](https://developer.wordpress.org/reference/classes/wordpress-aiclient-tools-dto-functioncall/__construct/?output_format=md#source)󠁿

    ```php
    public function __construct(?string $id = null, ?string $name = null, $args = null)
    {
        if ($id === null && $name === null) {
            throw new InvalidArgumentException('At least one of id or name must be provided.');
        }
        $this->id = $id;
        $this->name = $name;
        $this->args = $args;
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/php-ai-client/src/tools/dto/functioncall.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/7.0/src/wp-includes/php-ai-client/src/Tools/DTO/FunctionCall.php#L47)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/php-ai-client/src/Tools/DTO/FunctionCall.php#L47-L55)

## 󠀁[Related](https://developer.wordpress.org/reference/classes/wordpress-aiclient-tools-dto-functioncall/__construct/?output_format=md#related)󠁿

| Used by | Description | 
| [FunctionCall::fromArray()](https://developer.wordpress.org/reference/classes/wordpress-aiclient-tools-dto-functioncall/fromarray/)`wp-includes/php-ai-client/src/Tools/DTO/FunctionCall.php` |

{@inheritDoc}

  |

## 󠀁[Changelog](https://developer.wordpress.org/reference/classes/wordpress-aiclient-tools-dto-functioncall/__construct/?output_format=md#changelog)󠁿

| Version | Description | 
| [0.1.0](https://developer.wordpress.org/reference/since/0.1.0/) | Introduced. |

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