RSS构建相同的结果

I build a rss page with php. i have rss.php page. it getting new records and build rss. rss reader is showing new records but titles are same. like the image after add three records: image

rss.php:

include "../php/baglan.php";
$yenileri_getir_sql = mysqli_query($baglan,"select baslik,orijinal_metin,DATE_FORMAT(kayit_tarihi,'%a, %d %b %Y %T') as kayit_tarihi from orijinal_metinler where kayit_tarihi>=DATE_SUB(CURDATE(), INTERVAL 20 DAY) order by id desc");

$veriler = "";
if(mysqli_num_rows($yenileri_getir_sql)>0){
    $guid = 1;
    while($yeniler = mysqli_fetch_object($yenileri_getir_sql)){
        $baslik = $yeniler->baslik;
        $orijinal_metin = substr($yeniler->orijinal_metin,0,150);
        $kayit_tarihi = $yeniler->kayit_tarihi;

        $veriler .= "<item>
                          <title>$baslik</title>
                          <link>http://www.translateto.me/$guid</link>
                          <description>$orijinal_metin</description>
                          <pubDate>$kayit_tarihi</pubDate>
                          <guid isPermaLink='false'>$guid</guid>
                      </item>";
        $guid++;
    }
}

header("Content-type: text/xmlnn");

echo "<?xml version='1.0' encoding='UTF-8'?>
<rss version='2.0' xmlns:atom='http://www.w3.org/2005/Atom'>
    <channel>
        <atom:link href='http://localhost/translateto.me/rss/rss.php' rel='self' type='application/rss+xml' />
        <title>translateto.me</title>
        <link>http://www.translateto.me</link>
        <description>Geliştirici: Orhan Gazi Kılıç</description>
        $veriler
</channel>
</rss>";

rss.php results are here. They are true.