sitemap.xml

<?php
//
// Sitemap https://support.google.com/webmasters/answer/183668
// Sitemap stylesheet http://www.w3.org/TR/xslt-30/
// 50,000 URLs or maximum size of 10MB http://googlewebmastercentral.blogspot.com/2014/10/best-practices-for-xml-sitemaps-rssatom.html
//

include 'content/config.php';
include 'content/connect.php';
include 'content/cache.php'; cache::medb();

echo '<?xml version="1.0" encoding="utf-8"?>
<?xml-stylesheet type="text/xsl" href="' . $scheme . '://' . $host . $path . '/sitemap.xsl"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
    xmlns:image="http://www.google.com/schemas/sitemap-image/1.1"
    xmlns:video="http://www.google.com/schemas/sitemap-video/1.1">';

if ($stmt = $mysqli->prepare('SELECT url, GREATEST(modified, created) AS date FROM `' . table . '` ORDER BY `order` ASC')) {
    $stmt->execute();
    $stmt->bind_result($url, $date);

    while ($stmt->fetch()) echo "\n    <url>\n        <loc>$scheme://$host$path" . (strlen($url) ? "/$url" : null) . "</loc>\n        <lastmod>" . gmdate('c', strtotime($date)) . "</lastmod>\n    </url>";

    $stmt->free_result();
    $stmt->close();
}

$mysqli->close();

echo "\n</urlset>";