求教一个PHP采撷代码的写法

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, "http://www.cailele.com/static/ssc/newlyopenlist.xml");

curl_setopt ($ch, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)"); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$r = curl_exec($ch);
curl_close($ch);
header("content-type:text/xml");
echo $r;