Connection of the SberBank payment gateway. What needs to be implemented on the side of the online store? php page? module?

Question

CMS

There is an online store on a handwritten cms, when placing an order in the admin panel of the store, an order appears with a number, amount, date, description, everything that is needed to send a request to the Sberbank, the question is how to transfer the request to the Sberbank from the ordering page?

Answer 1

this is all we have, the test post and pages were created by Sberbank, the question is what to write on the checkout page so that the request goes to the Sberbank using the get or post method, we don’t have enough knowledge of php for implementation, the deadlines are tight - we won’t have time to learn php freelancers offer transfer the site to their engine or Bitrix, in terms of time it is also not 2 days)

Answer 2

After placing an order, send a curl request to Sberbank with registration of the application, if everything is ok, then redirect the user to the payment page, then process the results.