How to do validation per request in index.php PHP?

Question

PHP

Good afternoon, I'm making an API in PHP, and the question arose of how to check for a method, that is, now only api/users works, but how to do api/cars, for example?
https://klisl.com/php-api-rest.html - sources

<?php

require_once 'UsersApi.php';

try {
    $api = new usersApi();
    echo $api->run();
} catch (Exception $e) {
    echo json_encode(Array('error' => $e->getMessage()));
}

Answer 1

You inherit from and enter into abstract Apithe property Next, you will need to resolve the routing. all your requests go to index.php There must be a router that, depending on the parameters passed, will call the necessary code for simplicity, it will look at the superglobal array and see where it comes. By this property, you do or call the classes you need with api public $apiName;cars
ifswitch

Answer 2

echo $_SERVER['REQUEST_METHOD']; //'GET', 'HEAD', 'POST', 'PUT'.

upd: Soryan, I did not immediately catch up with what exactly is being asked.
That documentation says:
That is, for /api/cars you need to inherit the CarsApi class from the Api class and write its implementation.