<?php
$scheme = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') ? 'https' : 'http';
$currentHost = isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : '';
header('Content-Type: application/xml; charset=utf-8');
$paths = ['/', '/hot/', '/observe/', '/topic/', '/authors/', '/faq/', '/contact/', '/about/'];
echo '<?xml version="1.0" encoding="UTF-8"?>' . "
";
?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
<?php foreach ($paths as $path): ?>
  <url>
    <loc><?php echo htmlspecialchars($scheme . '://' . $currentHost . $path, ENT_XML1, 'UTF-8'); ?></loc>
    <lastmod><?php echo date('Y-m-d'); ?></lastmod>
    <changefreq><?php echo $path === '/' ? 'daily' : 'weekly'; ?></changefreq>
    <priority><?php echo $path === '/' ? '1.0' : '0.8'; ?></priority>
  </url>
<?php endforeach; ?>
</urlset>
