curl 采集的时候遇到301怎么办

采集的时候遇到301,采集数据有错误

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_BINARYTRANSFER,true);
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch,CURLOPT_ENCODING ,'gzip');
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
curl_setopt($ch, CURLOPT_TIMEOUT, 20);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);

$header = array(
           "GET /product/detail/490725/invest/0/10?_=1477377497991 HTTP/1.1",
   "Host: www.xiaoniu88.com",
   "Connection: keep-alive",
   "Cache-Control: max-age=0",
   "Accept: application/json, text/javascript, */*; q=0.01",
   "X-Requested-With: XMLHttpRequest",
   "User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36",
   "Referer: http://www.xiaoniu88.com/product/planning/detail/490725",
   "Accept-Encoding: gzip, deflate, sdch",
   "Accept-Language: zh-CN,zh;q=0.8,en;q=0.6",
   'Cookie: sr=334.127.201.43.11.3.43.224.47.109.0.33.20.15.07; JSESSIONID=ABDA9A33E61801B02E7064AA6D50EFAF.t-9003; lcksid=59916c534e4cea0024d7691c; SESSIONID=38acb08a-32a5-4043-a9e5-8c52a48916f4; referer="https://www.xiaoniu88.com/user/_2017-08-14"; _gat=1; _ga=GA1.2.1713379385.1502698882; _gid=GA1.2.1557902220.1502698882; Hm_lvt_7226b8c48cd07619c7a9ebd471d9d589=1502698882; Hm_lpvt_7226b8c48cd07619c7a9ebd471d9d589=1502702891'
      );
      curl_setopt($ch, CURLOPT_HTTPHEADER, $header);