PHP利用正则匹配 完成数据抓取

 //抓取该页面的数据
        $url = "http://xxxxxxx";
        $curl = curl_init($url);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 10);
        curl_setopt($curl, CURLOPT_ENCODING, "gzip");
        $contents = curl_exec($curl);
        curl_close($curl);
        $contents = mb_convert_encoding($contents, 'UTF-8', 'UTF-8,GBK,GB2312,BIG5' );
        $contents = \Helper\CFunctionHelper::DeleteHtml($contents);

        if (!preg_match_all("@<table[^>]+>(.*?)</table>@", $contents, $tables)) {
           die("匹配表格失败");
        }
        //dd($tables[1][1]);
        if (!preg_match_all("@<tr[^>]+>(.*?)</tr>@", $tables[1][1], $tr)) {
           die("匹配tr失败");
        }
//        var_dump($tr[1][0]);
//        die();
        $data = [];
        foreach($tr[1] as $value){
            $bonusData = strip_tags(str_replace('</td>', '|', str_replace(" ", '', $value)));
            $issue = 0;
            $recommend = "";
            $kaijiang = "";
            $result = "";

            try {
                list($issue, $recommend, $kaijiang,$result) = explode('|', $bonusData);
            } catch (\ErrorException $e) {
                die("发生异常：".$e->getMessage());
            }
            array_push($data,['issue'=>$issue,'recommend'=>$recommend,'kaijiang'=>$kaijiang,'result'=>$result]);
        }
        dd($data);

　　

/**
     * 去掉html中的换行和空格
     * @param type $str
     * @return type
     */
    public static function DeleteHtml($str)
    {
        $str = trim($str); //清除字符串两边的空格
        $str = preg_replace("/\t/","",$str); //使用正则表达式替换内容，如：空格，换行，并将替换为空。
        $str = preg_replace("/\r\n/","",$str);
        $str = preg_replace("/\r/","",$str);
        $str = preg_replace("/\n/","",$str);
        $str = preg_replace("\n[^\<]", "", $str);
        $str = preg_replace("/ /","",$str);
        $str = preg_replace("/  /","",$str);  //匹配html中的空格
        return trim($str); //返回字符串
    }