php 获取百度的热词数据

/**
 * 获取百度实时的热词
 * @user   chenhaibo
 * @return array  返回百度的热词数据(数组)
 */
function getBaiduHotKeyWord()
{
    $templateRss = file_get_contents('http://top.baidu.com/rss_xml.php?p=top10');
    If (preg_match('/<table>(.*)<\/table>/is', $templateRss, $_description)) {
        $templateRss = $_description [0];
        $templateRss = str_replace("&", "&amp;", $templateRss);
    }
    $templateRss = "<?xml version=\"1.0\" encoding=\"GBK\"?>" . $templateRss;
    $xml = simplexml_load_String($templateRss);
    foreach ($xml->tbody->tr as $temp) {
        if (!empty ($temp->td->a)) {
            $keyArray [] = trim(($temp->td->a));
        }
    }
    return $keyArray;
}