跪求高手帮帮忙，这个重定向搞死我了

Question

想要抓取的网址是这个
http://data-m.gtzy123.com/search_gs.aspx?c=JL8HA246220&w=2.65&mod=1
但是却抓取不到跳转后的html，请大神帮忙==================
<?php
$htmlstr = get_html("http://data-m.gtzy123.com/search_gs.aspx?c=JL8HA246220&w=2.65&mod=1");
echo $htmlstr;
function get_html( $url )
{
    $ch = curl_init();    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_TIMEOUT,120);
    curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/14.0.835.202 Safari/535.1");    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);//302redirect
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);//这个加了也没用，抓取不到最后的页面内容
    $content = curl_exec($ch);    curl_close($ch);
    return $content;
}===========

Answer 1

cookie 呢？

Answer 2

什么cookie，请大神指导

Answer 3

$url = 'http://data-m.gtzy123.com/search_gs.aspx?c=JL8HA246220&w=2.65&mod=1';
print_r(get_headers($url));
你会看到这样的结果
Array
(
    [0] => HTTP/1.1 302 Found
    [1] => Cache-Control: private
    [2] => Content-Type: text/html; charset=utf-8
    [3] => Location: /default.aspx?c=JL8HA246220&w=2.65&mod=1
    [4] => Server: Microsoft-IIS/8.5
    [5] => X-AspNet-Version: 4.0.30319
    [6] => X-Powered-By: ASP.NET
    [7] => Date: Mon, 11 Jun 2018 22:44:38 GMT
    [8] => Connection: close
    [9] => Content-Length: 165
    [10] => HTTP/1.1 302 Found
    [11] => Cache-Control: private
    [12] => Content-Type: text/html; charset=utf-8
    [13] => Location: /result.aspx
    [14] => Server: Microsoft-IIS/8.5
    [15] => Set-Cookie: ASP.NET_SessionId=ajf3klnysxhfnk4pqyop0x4c; path=/; HttpOnly
    [16] => X-AspNet-Version: 4.0.30319
    [17] => X-Powered-By: ASP.NET
    [18] => Date: Mon, 11 Jun 2018 22:44:38 GMT
    [19] => Connection: close
    [20] => Content-Length: 129
    [21] => HTTP/1.1 302 Found
    [22] => Cache-Control: private
    [23] => Content-Type: text/html; charset=utf-8
    [24] => Location: /Default.aspx
    [25] => Server: Microsoft-IIS/8.5
    [26] => X-AspNet-Version: 4.0.30319
    [27] => X-Powered-By: ASP.NET
    [28] => Date: Mon, 11 Jun 2018 22:44:39 GMT
    [29] => Connection: close
    [30] => Content-Length: 130
    [31] => HTTP/1.1 200 OK
    [32] => Cache-Control: private
    [33] => Content-Type: text/html; charset=utf-8
    [34] => Server: Microsoft-IIS/8.5
    [35] => Set-Cookie: ASP.NET_SessionId=hrobjv15rhmjubnsleiaw0e2; path=/; HttpOnly
    [36] => X-AspNet-Version: 4.0.30319
    [37] => X-Powered-By: ASP.NET
    [38] => Date: Mon, 11 Jun 2018 22:44:39 GMT
    [39] => Connection: close
    [40] => Content-Length: 2630
)在 302 页面中有 cookie 设置，如果你不接收和发送 cookie 的话，是到达不了目标页的