<?php

$url = 'http://server.ext:port/page.php?username=test&password=pass';
$targetFile = fopen('download.m3u', 'w+');

$curl = curl_init($url);
curl_setopt($curl, CURLOPT_FILE, $targetFile);

$result = curl_exec($curl);
curl_close($curl);

echo $result ? 'Download successful!' : 'Download failed.';