How can I find out what is in the $orderFields fields of the OnOrderSave handler?

Question

1C-Bitrix

I'm writing an OnOrderSave event handler and can't figure out how to find out what's in the $arFields and $orderFields fields. I looked at the documentation , but there is no detailed information

Answer 1

In your handler

\Bitrix\Main\Diag\Debug::writeToFile($arFields, 'fields', '/sale_log.txt');

after calling the handler, a file will appear in the root