How to send a response to a request from another site?

Question

PHP

Hello. I have one problem, I'm not familiar with PHP, but I need to make a site that, upon request from another site, should return a json file, tell someone how to do this? Those. For example, if we make such a request: localhost/posts, then that json should be returned in response.

Answer 1

site to local

???
The question is terrible, nothing is clear, there is a guess: maybe you need
php.net/manual/ru/function.file-get-contents.php

Answer 2

Just place a posts file with the content you want in document_root and set up the webserver to serve it. PHP is not needed.