What is the best way to display XML on the site page by page?

Question

PHP

PHP receives the entire XML file from a third-party service via a POST request.
And in order not to throw out several hundred records on one page, I would like to implement Paging.
Where and how best to save the file itself?
And what is the best approach or method to use to display XML file page by page?
In advance, thanks a lot for the suggestions!
PS Receive parts - not an option. Each request requires authorization, which negatively affects performance.

Answer 1

Where and how best to save the file itself?

in the database.