Image dans flux rss

$enclosure = $parent->createElement("enclosure");
        $enclosure = $item->appendChild($enclosure);
        $text_enclosure = $parent->createTextNode($image);
        $text_enclosure = $image->appendChild($text_enclosure);
  
  $url = $parent->createElement("url");
        $url = $item->appendChild($url);
        $text_url = $parent->createTextNode("http://www.site.com/repertoire/img.jpg");
        $text_url = $url->appendChild($text_url);

<?php



function &init_news_rss(&$xml_file)
{
        $root = $xml_file->createElement("rss"); // création de l'élément
        $root->setAttribute("version", "2.0"); // on lui ajoute un attribut
        $root = $xml_file->appendChild($root); // on l'insère dans le noeud parent (ici root, qui est "rss")
        
        $channel = $xml_file->createElement("channel");
        $channel = $root->appendChild($channel);
                
        $desc = $xml_file->createElement("description");
        $desc = $channel->appendChild($desc);
        $text_desc = $xml_file->createTextNode("ce qu'il faut savoir."); // on insère du texte entre les balises <description></description>
        $text_desc = $desc->appendChild($text_desc);
        
        $link = $xml_file->createElement("link");
        $link = $channel->appendChild($link);
        $text_link = $xml_file->createTextNode("http://www.site.com/");
        $text_link = $link->appendChild($text_link);
        
        $title = $xml_file->createElement("title");
        $title = $channel->appendChild($title);
        $text_title = $xml_file->createTextNode("site.com");
        $text_title = $title->appendChild($text_title);
        
        return $channel;
}





function add_news_node(&$parent, $root, $id_billet, $auteur, $titre, $resume, $image, $date)
{
        $item = $parent->createElement("item");
        $item = $root->appendChild($item);
        
        $title = $parent->createElement("title");
        $title = $item->appendChild($title);
        $text_title = $parent->createTextNode($titre);
        $text_title = $title->appendChild($text_title);
        
        $link = $parent->createElement("link");
        $link = $item->appendChild($link);
        $text_link = $parent->createTextNode("http://www.site.com/controleur/commentaire/index.php?billets=$id_billet");
        $text_link = $link->appendChild($text_link);
  
  $enclosure = $parent->createElement("enclosure");
        $enclosure = $item->appendChild($enclosure);
        $text_enclosure = $parent->createTextNode($image);
        $text_enclosure = $image->appendChild($text_enclosure);
  
  $url = $parent->createElement("url");
        $url = $item->appendChild($url);
        $text_url = $parent->createTextNode("http://www.site.com/repertoire/img.jpg");
        $text_url = $url->appendChild($text_url);
  
  
  
  
        
        $desc = $parent->createElement("description");
        $desc = $item->appendChild($desc);
        $text_desc = $parent->createTextNode($resume);
        $text_desc = $desc->appendChild($text_desc);
        
        $com = $parent->createElement("comments");
        $com = $item->appendChild($com);
        $text_com = $parent->createTextNode("http://www.site.com/controleur/commentaire/index.php?billets=$id_billet");
        $text_com = $com->appendChild($text_com);
        
        $author = $parent->createElement("author");
        $author = $item->appendChild($author);
        $text_author = $parent->createTextNode($auteur);
        $text_author = $author->appendChild($text_author);
        
        $pubdate = $parent->createElement("pubDate");
        $pubdate = $item->appendChild($pubdate);
        $text_date = $parent->createTextNode($date);
        $text_date = $pubdate->appendChild($text_date);
        
        $guid = $parent->createElement("guid");
        $guid = $item->appendChild($guid);
        $text_guid = $parent->createTextNode("http://www.site.com/controleur/commentaire/index.php?billets=$id_billet");
        $text_guid = $guid->appendChild($text_guid);
        
        $src = $parent->createElement("source");
        $src = $item->appendChild($src);
        $text_src = $parent->createTextNode("http://www.site.com/");
        $text_src = $src->appendChild($text_src);
}


function rebuild_rss()
{
        // on se connecte à la BDD

try
{
$bdd= new PDO('mysql:host=localhost;dbname=bdd','inc','pw');

}
catch(Exception $e)
{
die ('Erreur:'.$e->getMessage());
}

       
  $req = $bdd->query('SELECT id_billet, titre1, resume,image1, auteur,DATE_FORMAT(date_de_creation,\'%d/%m/%Y à %Hh%imin%ss\') AS date_de_creation_fr FROM billets ORDER BY date_de_creation_fr DESC LIMIT 0,20');
  
 
        // on crée le fichier XML
        $xml_file = new DOMDocument("1.0");
 
  
  $channel = init_news_rss($xml_file);

 
        // on ajoute chaque news au fichier RSS
       while( $donnees = $req->fetch() )
        {
                add_news_node ($xml_file, $channel, $donnees["id_billet"], $donnees["auteur"], 
          $donnees["titre1"], $donnees["resume"],$donnees["image1"],
          $donnees["date_de_creation_fr"]);
        }
        
        // on écrit le fichier
        $xml_file->save("rss.xml");
}



rebuild_rss();



?>