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функция не описана

WC_REST_CRUD_Controller::create_item() public WC 1.0

Create a single item.

Это метод класса: WC_REST_CRUD_Controller{}

Хуки из метода
Возвращает

WP_Error/WP_REST_Response.

Использование

$WC_REST_CRUD_Controller = new WC_REST_CRUD_Controller();
$WC_REST_CRUD_Controller->create_item( $request );
$request(WP_REST_Request) (обязательный)
Full details about the request.

Код WC_REST_CRUD_Controller::create_item() WC 4.5.2

woocommerce/includes/rest-api/Controllers/Version3/class-wc-rest-crud-controller.php
<?php
public function create_item( $request ) {
	if ( ! empty( $request['id'] ) ) {
		/* translators: %s: post type */
		return new WP_Error( "woocommerce_rest_{$this->post_type}_exists", sprintf( __( 'Cannot create existing %s.', 'woocommerce' ), $this->post_type ), array( 'status' => 400 ) );
	}

	$object = $this->save_object( $request, true );

	if ( is_wp_error( $object ) ) {
		return $object;
	}

	try {
		$this->update_additional_fields_for_object( $object, $request );

		/**
		 * Fires after a single object is created or updated via the REST API.
		 *
		 * @param WC_Data         $object    Inserted object.
		 * @param WP_REST_Request $request   Request object.
		 * @param boolean         $creating  True when creating object, false when updating.
		 */
		do_action( "woocommerce_rest_insert_{$this->post_type}_object", $object, $request, true );
	} catch ( WC_Data_Exception $e ) {
		$object->delete();
		return new WP_Error( $e->getErrorCode(), $e->getMessage(), $e->getErrorData() );
	} catch ( WC_REST_Exception $e ) {
		$object->delete();
		return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => $e->getCode() ) );
	}

	$request->set_param( 'context', 'edit' );
	$response = $this->prepare_object_for_response( $object, $request );
	$response = rest_ensure_response( $response );
	$response->set_status( 201 );
	$response->header( 'Location', rest_url( sprintf( '/%s/%s/%d', $this->namespace, $this->rest_base, $object->get_id() ) ) );

	return $response;
}