How to fetch Live Real-Time Gold and Silver Rates with API

gold_silver_rates.php

<!-- https://metalpriceapi.com/ -->
<?php

$curl = curl_init();

// metalpriceapi.com
curl_setopt_array($curl, array(
  CURLOPT_URL => 'https://api.metalpriceapi.com/v1/latest?api_key=REPLACE_ME&base=USD&currencies=XAU,XAG,EUR',
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => '',
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 0,
  CURLOPT_FOLLOWLOCATION => true,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => 'GET',
));

$response = curl_exec($curl);

curl_close($curl);
echo $response;