Why php script doesn't accept post request remotely?

Question

PHP

Good afternoon, there is the simplest script from one line of code print_r($_POST); using various rest clients, I send a request containing post parameters to it, everything works locally, when the script is transferred to an external server, it displays an empty array, and if you send a POST request from the same site to the script, the script returns a normal response... this behavior it started suddenly and at first only some scripts stopped responding to post requests, and now none of them respond at all. I didn't change the server settings. What could it be, where to dig?

Answer 1

I have ok. Only for some reason it accepts GET parameters for POST

Answer 2

Maybe your browser has been updated?
https://www.w3.org/TR/cors/
https://learn.javascript.ru/xhr-crossdomain

Answer 3

Tried with another app, here is the result...