Generate sitemap.xml formatted file from text file containing list of links

generatesitemap.php

<?php
 
 print("\n");
 
if(!isset($argv[1]))
{
    die("! Required argument: filename \n");
}
 
$filename = $argv[1];
print("> Parsing $filename\n");
 
if(!file_exists($filename))
{
    die("! $filename does not exist \n");
}
 
$list = file($filename);
print('> Contains ' . count($list) . " entries\n");
 
$prefix = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<urlset xmlns=\"http://www.sitemaps.org/schemas/sitemap/0.9\">\n";
$postfix = "\n</urlset>\n";
 
// Format a date string to use in the lastmodified node text
// $today = date('Y-m-d');
 
$urlset = array();
 
foreach ($list as &$url)
{
    $node  = "<url>\n";
    $node .= "    <loc>" . trim(preg_replace('/\s+/', ' ', $url)) . "</loc>\n";
//  $node .= "    <lastmod>" . $today . "</lastmod>\n"; // TODO: accept `lastmod` as option: boolean
//  $node .= "    <changefreq>monthly</changefreq>\n"; // TODO: accept `changefreq` as option: string
    $node .= "</url>";
    array_push($urlset, $node);
}
 
$output = preg_replace("/([a-z0-9-_]+)\.[a-z]+/i", "$1.xml", $filename);
print("> Write to: $output \n");
 
file_put_contents($output, $prefix . implode("\n", $urlset) . $postfix);
 
exit("\n> Process completed.\n");

sample.txt

http://google.com
http://bing.com
http://yahoo.com