PHP crawls web pages to match content templates

<?php
  set_time_limit(0);
  $url="http://wap.baidu.com/s?word=site%3Apan.baidu.com+intitle%3A%E5%85%8D%E8%B4%B9%E9%AB%98%E9%80%9F"; //百度搜索结果
  $ch=curl_init();
  curl_setopt($ch,CURLOPT_HEADER,false);
  curl_setopt($ch,CURLOPT_URL,$url);
  curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
  $content=curl_exec($ch);
  curl_close($ch);
  preg_match_all(&#39;/<div class="resitem"(.*)<\/div>/iUs',$content,$text);//用正则表达式匹配搜索结果
  //var_dump($text);
  foreach ($text[0] as $key) 
  {
    echo $key."<br>";
  }
?>