php抓取远程数据排序

<?php

header("Content-type: textml; charset=utf-8");

$url = "http://i.youku.com/u/UNTMyNDk2Nzgw/videos/fun_ajaxload/?__rt=1&__ro=&v_page=1&page_num=3&page_order=1&q=&last_str=&qq-pf-to=pcqq.group";

$html = file_get_contents($url);

$pattern='!(<div class="yk-col4" c_time="[^>]+>.*<div class="v-meta-overlay"></div>.*</div>.*</div>.*</div>)!isU';

preg_match_all($pattern,$html,$match);

$arr = $match[1];

krsort($arr);

$html = implode("", $arr);

echo '<div class="yk-row">';

echo $html;

echo '</div>';

?>