.. _users-manual-calculation-script:

Calculation script
------------------

If you write and use your own calculation scripts, then you should always use only the price
variables. Use the price variables and the :typoscript:`TAXpercentage` and :typoscript:`TAXincluded` constants. 
You can use the
local PHP variables :php:`$calculatedArray` and

..  code-block:: php
    :caption: basket calculation example

    use TYPO3\CMS\Core\Utility\GeneralUtility;
    use JambageCom\TtProducts\Api\BasketApi;

    $basketObj = GeneralUtility::makeInstance(Basket::class);
    $itemArray = $basketObj->getItemArray();

to make your own price calculations.

..  code-block:: typoscript
    :caption: set calculationScript as EXT:my_extension/Classes/Utility/MyCalculations.php

    10.calculationScript = EXT:my_extension/Classes/Utility/MyCalculations.php