<?php
$scheme = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') ? 'https' : 'http';
$currentHost = isset($_SERVER['HTTP_HOST']) ? preg_replace('/[^A-Za-z0-9\.\-:\[\]]/', '', $_SERVER['HTTP_HOST']) : '';
$currentOrigin = $currentHost ? $scheme . '://' . $currentHost : '';
$currentPath = strtok($_SERVER['REQUEST_URI'] ?? '/', '?');
$brand = '每日大赛';
function e($v){ return htmlspecialchars((string)$v, ENT_QUOTES, 'UTF-8'); }
function today_cn(){ return date('Y年m月d日'); }
?><?php
header('Content-Type: application/xml; charset=UTF-8');
$paths = ['/', '/features/', '/tutorials/', '/updates/', '/help/', '/tips/', '/faq/', '/contact/'];
echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
echo "<urlset xmlns=\"http://www.sitemaps.org/schemas/sitemap/0.9\">\n";
foreach($paths as $p){
  echo "  <url><loc>" . e($currentOrigin . $p) . "</loc><lastmod>" . date('Y-m-d') . "</lastmod><changefreq>weekly</changefreq><priority>" . ($p==='/'?'1.0':'0.8') . "</priority></url>\n";
}
echo "</urlset>\n";
?>