How to integrate via php with a fiscal printer?

Question

Printers

Hello everyone
All fiscal printers ( atol , crystal ) are connected to programs (1C, cash register software, etc.).
To print a check - you need to send data to the printer. There is no network driver. Logically, programs (which work with FP) should have an API through which they can be connected. But he is not.
Question: how to connect the FP to print a receipt on order? The data is taken from the php + mysql bundle.

Answer 1

write an extension in C and forward the necessary functionality.

Answer 2

It all depends on the printer model. The protocol of COM-port fiscal registrars Barcode, for example, is described in detail here

Answer 3

But he is not.

How is it not? There is! Through a screw COM object, or write directly to the port. The same atoll has all the documentation in the Download Center , incl. and with all methods, properties, error codes, etc. Example: "Receipt Printer Driver v.8. Programmer's Guide"