i have to possess a php code competent to parse a wordpress blog together with his publish and comments, really I've this code to parse only posts:

foreach ($rss->getElementsByTagName('item') as $node) {
            $item = array ( 
                'title' => $node->getElementsByTagName('title')->item(0)->nodeValue,
                'desc' => $node->getElementsByTagName('description')->item(0)->nodeValue,
                'link' => $node->getElementsByTagName('link')->item(0)->nodeValue,
                'date' => $node->getElementsByTagName('pubDate')->item(0)->nodeValue,
                'comments' => $node->getElementsByTagName('comments')->item(0)->nodeValue,
                );
            array_push($feed, $item);
        }

    $limit = 5;
    for($x=0;$x<$limit;$x++) {
        $title = str_replace(' & ', ' &amp; ', $feed[$x]['title']);
        $link = $feed[$x]['link'];
        $description = $feed[$x]['desc'];
        $comments = $feed[$x]['comments'];

But as I only say, I want every comment of each and every publish.