How to use api in php?

Question

PHP

The essence of the question is how to display certain information from the api, for example, only the dollar exchange rate here is the code:
<?php
$url = ' https://api.privatbank.ua/p24api/pubinfo?exchange&... ';
$json_response = file_get_contents($url);
$response = json_decode($json_response);
foreach ($response as $item){
var_dump($item);
}

Answer 1

$url = 'https://api.privatbank.ua/p24api/pubinfo?exchange&json&coursid=11';
$json_response = file_get_contents($url);
$response = json_decode($json_response,true);
$dollarcost = $response[0]['buy'];
 echo $dollarcost;

Answer 2

In order for you to get not only the dollar rate, but namely WORK WITH API, google about curl. It's actually easier than it looks at first glance.