PHP获取百度最新事件

PHP获取百度最新事件，如下代码：

function getBaiduHotKeyWord()    
{    
    $templateRss = file_get_contents('http://top.baidu.com/rss_xml.php?p=shijian');    
    If (preg_match('/(.*)/is', $templateRss, $_description)) {    
    $templateRss = $_description[0];    
    $templateRss = str_replace("&", "&", $templateRss);    
    }    
   $templateRss = "".trim($templateRss);    
   $xml = simplexml_load_String($templateRss);    
   foreach ($xml->tbody->tr as $temp) {    
    if (!emptyempty ($temp->td->a)) {    
      $keyArray [] = trim(($temp->td->a));    
    }    
   }    
   return $keyArray;    
 }