<?php
$cache_file = "16";
$ch = curl_init(); 
curl_setopt($ch, CURLOPT_URL, 'http://link.domain.com/' . $cache_file); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
$output = curl_exec($ch); 

curl_close($ch); 
echo $output;

?>