php collection website

<?php
namespace Home\Controller;
use Think\Controller;
class CollectionController extends Controller {
    public function Collection(){
        header("Content-Type: text/html;charset=utf-8");
        // Initialize a cURL object
        $curl = curl_init();
        // Set the URL you need to scrape
        curl_setopt($curl, CURLOPT_URL, 'http://fenxiang.banguanshui.com/');
        // set header
//        curl_setopt($curl, CURLOPT_HEADER, 1);
        // Set cURL parameters, whether to save the result to a string or output to the screen.
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        // Run cURL, request the web page
        $data = curl_exec($curl);
        // close the URL request
        curl_close($curl);
        //$data is the value returned by curl_exec, that is, the collected target content
        preg_match_all('/<span class="username" (.*)>(.*)<\/span>/isU',$data, $asd, PREG_SET_ORDER);
        preg_match_all('/<h3><a href="(.*)" (.*)>(.*)<\/a>/',$data, $out, PREG_SET_ORDER);
        $row =array();
        $i = 0;
        foreach($out as $key => $value){
            //Here $value is an array, while recording the whole sentence with matching characters and the matching characters alone
            $row[1] = 'http://fenxiang.banguanshui.com/'.$value[1];
            $row[2] = $value[3];
//            foreach($asd as $key => $value){
//                $row[3] = $value[2];
//            }
            $row[3] = $asd[$i][2];
            $i++;
//               dump($row);exit;
            $collection = M('collection');
                $bata['url'] = $row[1];
                $ seke = $ bata ['url'];
               
               
// $ sdsa = $ bata ['title'];
//                print_r($seke);exit;
//                $blog1 = $collection->where(array('url' => $seke))->find();
                $blog = $collection->where(array('url' =>$seke))->find();
//             echo strlen($seke);exit;
//             print_r($blog1);exit;
             if($bata['url'] != $blog['url']){
                  $bata['title'] = $row[2];
                  $bata['author'] = $row[3];
                  $cent = $collection->add($bata);
                  echo 'Added successfully';
                   dump($cent);
             }
             else{
                 echo 'Add failed';
             }
            
        }
            
    }
}