<?php
$url = 'http://www.example.com/a-large-file.zip';
$path = '/path-to-file/a-large-file.zip';
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$data = curl_exec($ch);
curl_close($ch);
file_put_contents($path, $data);
?>