How to make a request queue?

Question

PHP

My script works in php-cli, an eternal cycle is spinning there all the time - VK bot.
I'm going to make a queue of requests for the API, there is a call to the function that makes requests for the API.
Now I'm going to do this: let's say every second all calls to the function are collected and 1 request is made
How to make the script wait for the function's response and have the function return its own response to each call?