Integration of your own PHP system with an online checkout?

Question

Electronic accounting

Hello, we have our own web-based development (orders/clients/sales receipts/waybills...) and we need to set up one cash register - which is still a mystery, and how to connect it all too.
The server on which everything is spinning in the office's local network, the cash desk will also be there.
You need to somehow be able to print checks from your system, for example, through curl, sending via JSON, or through lonpool from the cash register to catch events and print.
It is possible to connect the cash register to one of the computers and run some kind of service on this computer, and send requests from the server.
If you have any thoughts, tell me which cash register with which software can be used for such purposes?

Answer 1

well, there are a lot of solutions, for example:
https://www.ekam.ru/page/online-api
https://habr.com/ru/company/atol/blog/344634/
www.rnditsoft.ru
+ you can write it yourself a python server for any fiscal specialist
The bottom line is that you have to buy a piece of iron and periodically change the FN

Answer 2

Why do you need so many complications? After all, online can be transferred to the payment aggregator. Connect the acceptance of payments on the site and all questions on 54FZ are closed by the supplier. And you accept payment from legal entities to the account of the company under the contract.