- print_r: documentation ( source)
<?php
$ch = curl_init('https://wscont.apps.microsoft.com/winstore/OSUpgradeNotification/products_472.xml');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$response = curl_exec($ch);
$content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
print_r($content_type);