php抓取页面内容

$url = 'http://www.meishij.net/chufang/diy/?page=1#listnav';$opts = array(   'http'=>array(     'user_agent' => "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)",  ) ); $context = stream_context_create($opts); $con = file_get_contents("$url", false, $context);//条目$preg ='#<strong class="title"><a target="_blank" title="(.*)" href="(.*)">(.*)</a></strong>#';   preg_match_all($preg, $con, $arr); //搜索内容赋值给数组 for($i=0;$i<20;$i++)  //单页面截取{     //print_r($arr[0][$i]);    $ss=$arr[2][$i];      echo $ss;   echo "</br>";  $opts = array(   'http'=>array(     'user_agent' => "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)",  ) ); $context = stream_context_create($opts); $cons = file_get_contents("$ss", false, $context);//标题$preg ='#<h2 class="cpc_h2">(.*)</h2>#';   preg_match_all($preg, $cons, $arr); //搜索内容赋值给数组 print_r($arr[0][0]);//内容$preg ='#<p><em class=(.*)>(.*)</em>(.*)</p>#';   preg_match_all($preg, $cons, $arr); //搜索内容赋值给数组 print_r($arr[0][0]);echo "</br>";print_r($arr[0][1]);echo "</br>";print_r($arr[0][2]);echo "</br>";//图片$preg ='#<p>@@##@@</p>#';   preg_match_all($preg, $cons, $arr); //搜索内容赋值给数组 print_r($arr[0][0]);echo "</br>";print_r($arr[0][1]);echo "</br>";print_r($arr[0][2]);echo "</br>";print_r($arr[0][3]);echo "</br>";print_r($arr[0][4]);echo "</br>";print_r($arr[0][5]);echo "</br>";print_r($arr[0][6]);     }