Herkese iyi günler
Şuan aktif çalışan sitemap.xml dosyam var ama sanki sorunlu gibi geliyor bana anlayan birisi inceleyebilir mi acaba nerelerde değişiklik yapmam lazım ya da düzgün çalışıyor mu aktif olarak

<?php header('Content-type: application/xml; charset="utf8"',true);  ?>
<urlset
xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9
http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd">


<?php

$servername = "";
$username = "";
$password = "";
$dbname = "";

$site = $_SERVER["HTTP_HOST"];
$tarih=date("Y-m-d");

function seo($url){
$url = trim($url);
$url = strtolower($url);
$find = array('<b>', '</b>');
$url = str_replace ($find, '', $url);
$url = preg_replace('/<(\/{0,1})img(.*?)(\/{0,1})\>/', 'image', $url);
$find = array(' ', '&quot;', '&amp;', '&', '\r\n', '\n', '/', '\\', '+', '<', '>');
$url = str_replace ($find, '-', $url);
$find = array('é', 'è', 'ë', 'ê', 'É', 'È', 'Ë', 'Ê');
$url = str_replace ($find, 'e', $url);
$find = array('í', 'ı', 'ì', 'î', 'ï', 'I', 'İ', 'Í', 'Ì', 'Î', 'Ï');
$url = str_replace ($find, 'i', $url);
$find = array('ó', 'ö', 'Ö', 'ò', 'ô', 'Ó', 'Ò', 'Ô');
$url = str_replace ($find, 'o', $url);
$find = array('á', 'ä', 'â', 'à', 'â', 'Ä', 'Â', 'Á', 'À', 'Â');
$url = str_replace ($find, 'a', $url);
$find = array('ú', 'ü', 'Ü', 'ù', 'û', 'Ú', 'Ù', 'Û');
$url = str_replace ($find, 'u', $url);
$find = array('ç', 'Ç');
$url = str_replace ($find, 'c', $url);
$find = array('ş', 'Ş');
$url = str_replace ($find, 's', $url);
$find = array('ğ', 'Ğ');
$url = str_replace ($find, 'g', $url);
$find = array('/[^a-z0-9\-<>]/', '/[\-]+/', '/<[^>]*>/');
$repl = array('', '-', '');
$url = preg_replace ($find, $repl, $url);
$url = str_replace ('--', '-', $url);
return $url;
}

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
mysqli_set_charset($conn,'utf8');
?>

<!-- Makaleler Sitemap -->

<?php
$sql = "SELECT * FROM icerik";
$result = $conn->query($sql);

while($icerikcek = $result->fetch_assoc()) { ?>


<url>
<loc>while döngüsüyle gelen link</loc>
<lastmod>makale zamanı</lastmod>
<changefreq>daily</changefreq>
<priority>1.00</priority>
</url>

<?php } ?>

<?php
$conn->close();
?>
</urlset>