PHP代码-数据爬取（a标签和a标签所对应的内容）

public function export(){

        set_time_limit(1000);

// header("Content-type: text/html; charset=utf-8");

        $a = file_get_contents('http://chuangye.yjbys.com/zhengce/');

        $reg = '/<\/span><a href="(.*)" (.*)>(.*)</isU';

        $result = preg_match_all($reg,$a,$match_result);

        $arr = array();

        foreach($match_result[1] as $k=>$v){

            $tnum = strlen($match_result[3][$k]);

            if(substr($v,0,1) == 'h' && $tnum>21){

                $arr[$k]['art_url'] = $v;

                $arr[$k]['art_title'] = mb_convert_encoding($match_result[3][$k], "UTF-8",'gbk');

//                    $match_result[3][$k];

                    mb_convert_encoding($match_result[3][$k], "UTF-8",'gbk');

                $b = file_get_contents($v);

                preg_match('/<div class=\"content\">(.*)<\/div>/s',$b,$match);

                $match[0] = iconv("gbk", "utf-8", $match[0]);

                $num =  strpos($match[0],'<script type="text/javascript">a("content_body");</script>');

                $cont = substr($match[0],0,$num)."</div>";

                $cony = str_replace('<div class="ad_top_left"><script type="text/javascript">a("content_1");</script></div>',"",$cont);

                $cont = str_replace('<div class="ad_top_left2"><script type="text/javascript">a("content_2");</script></div>',"",$cony);

//                $cont = str_replace('“','“',$cont);

//                $cont = str_replace('”','”',$cont);

//                $cont = str_replace('…','~',$cont);

//                $cont = str_replace('—','-',$cont);

//                $cont = str_replace('"','“',$cont);

//                $cont = str_replace('•','•',$cont);

                $arr[$k]['art_content'] = html_entity_decode($cont);

                $arr[$k]['state'] = 0;

                $arr[$k]['type'] = 4;

                $arr[$k]['userid'] = 4;

            }

        }

        $arr = array_values($arr);

//        print_r($arr);die;

//        $arr2=array_iconv("gbk","utf-8",$arr);

//        print_r($arr);die;

        $article = M('cxpt_user_article');

        var_dump($article->addAll($arr));echo $article->getLastSql();die;

//        foreach($arr as &$v){

//            $b = file_get_contents($v['url']);

//            preg_match('/<div class=\"content\">(.*)<\/div>/s',$b,$match);

//            $num =  strpos($match[0],'<script type="text/javascript">a("content_body");</script>');

//            $v['content'] = substr($match[0],0,$num);

//        }

//        foreach($arr as $v){

//            $info['art_title'] = $v['title'];

//            $info['art_content'] = $v['content'];

//        }

//        print_r($arr);die;

    }