通过PHP检索机箱映像URL

Question

我正在尝试通过PHP检索机箱的URL，但是收到的错误表明机箱是非对象的。当我在本地运行它时，此代码有效，但在上传到我的服务器并直接在站点上运行时似乎不起作用。它被插入到表达引擎页面fwiw。

$rss = new DOMDocument();
$rss->load('http://www.blueskyresumes.com/blog/feed/');
$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,
                        'creator' => $node->getElementsByTagName('creator')->item(0)->nodeValue,
                        'image' => $node->getElementsByTagName('enclosure')->item(0) ? $node->getElementsByTagName('enclosure')->item(0)->getAttribute('url') : '',
                        );
                    array_push($feed, $item);
}

$limit = 3;
for ($x = 0; $x < $limit; $x++) {
                    $title = str_replace(' & ', ' &amp; ', $feed[$x]['title']);
                    $link = $feed[$x]['link'];
                    $description = $feed[$x]['desc'];
                    $date = date('l F d, Y', strtotime($feed[$x]['date']));
                    $author = $feed[$x]['creator'];
                    $image = $feed[$x]['image'];
                    echo '<span><img src="'. $image . '" /></span><h4 class="blog_title"><a href="'.$link.'" title="'.$title.'">'.$title.'</a><br />';
                    echo '<small><em>by '.$author.'</em></small></h4>';
}