Simple RSS GRAB WORDPRESS

<?php

function readRss($atts) {
    extract(shortcode_atts(array(
        "feed" => '',
        "num" => '',
    ), $atts));

    $feed2 = $atts['feed'];
    $num = $atts['num'];

    $rss = new DOMDocument();
    // $rss->load('http://wordpress.org/news/feed/');
    $rss->load($feed2);
    $feed = array();
    foreach ($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' => $node->getElementsByTagName('pubDate')->item(0)->nodeValue,
            );
        array_push($feed, $item);
    }
    $limit = $num;
    $output = '';
    foreach(array_slice($feed, 0, $limit) as $feeditem ) {
        $title = str_replace(' & ', ' &amp; ', $feeditem['title']);
        $link = $feeditem['link'];
        $description = $feeditem['desc'];
        $date = date('l F d, Y', strtotime($feeditem['date']));

        $output .= '<p><strong><a href="'.$link.'" title="'.$title.'">'.$title.'</a></strong><br />';
        $output .= '<small><em>Posted on '.$date.'</em></small></p>';
        $output .= '<p>'.$description.'</p>';

    }
    return $output;
}
add_shortcode('rssfeed', 'readRss');