A PHP library implementing the basics of the FinTS / HBCI protocol. It can be used to fetch the balance of connected bank accounts and for fetching bank statements of accounts.
Install via composer:
composer require mschindler83/fints-hbci-php
You can have a look at the "Samples" folder in this repository. Just fill in the required data beginning from line 13 to 17 and run the script.
You can find the server information of your bank here: https://www.hbci-zka.de/institute/institut_auswahl.htm