php模拟提交验证码之后，跳转的地址302，求解

我是想频繁搜索搜狗的搜索结果
频繁请求之后，会进入验证码页面，我想模拟提交验证码，然后进入到跳转到解封的搜索结果页面
现在做到了模拟提交验证码没问题了，但是我不会抓跳转地址，我抓到的地址返回的信息在下面……
实在是惭愧，对curl太不熟悉。
从curl的返回结果看，现在是这个
HTTP/1.1 100 ContinueHTTP/1.1 302 Moved Temporarily
Server: nginx
Date: Sat, 18 Mar 2017 03:55:28 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
Location: http://weixin.sogou.com/antispider/?from=%2fweixin%3Fie%3dutf8%26query%3d%E4%B9%90%E8%A7%86%E5%80%92%E9%97%AD%26type%3d2%26dp%3d1%26page%3d1HTTP/1.1 200 OK
Server: nginx
Date: Sat, 18 Mar 2017 03:55:28 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
Vary: Accept-Encoding
X-Powered-By: PHP/5.3.3
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
我用的代码如下
<?php
$cookie_file = "./tmp.cookie";
$header = getSogouHead();if (isset($_POST['dosubmit'])) {
    $login_url = 'http://weixin.sogou.com/antispider/thank.php';    $url = "http://weixin.sogou.com/weixin?ie=utf8&query=%E4%B9%90%E8%A7%86%E5%80%92%E9%97%AD&type=2&dp=1&page=1"; //这个是我需要返回的页面    $antispider_url = 'http://weixin.sogou.com/antispider/?from=%2fweixin%3Fie%3dutf8%26query%3d%E4%B9%90%E8%A7%86%E5%80%92%E9%97%AD%26type%3d2%26dp%3d1%26page%3d1'; //这个是频繁刷新$url之后跳转到的页面    $formData = $_POST;    unset($formData['dosubmit']);
    //进行设置随机字符
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_URL, $login_url);
    curl_setopt($curl, CURLOPT_HEADER, $header);
    curl_setopt($curl, CURLOPT_USERAGENT, 'User-Agent:Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_8; en-us) AppleWebKit/534.50 (KHTML, like Gecko) Version/5.1 Safari/534.50');
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($curl, CURLOPT_POSTFIELDS, $formData);
    curl_setopt($curl, CURLOPT_COOKIEFILE, $cookie_file);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    $data = curl_exec($curl);
    $info = curl_getinfo($curl);
    curl_close($curl);    //获取提交验证码返回结果end
    // $url = ""; //如何获取上面代码跳转的地址然后给下面的代码打开呢……
    // exit;
    //这以上代码是对的。问题出在下一步怎么做上，如何去获取跳转回来的页面并且用curl打开
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $antispider_url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $formData);
    curl_setopt($ch, CURLOPT_HEADER, $header);
    curl_setopt($ch, CURLOPT_USERAGENT, 'User-Agent:Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_8; en-us) AppleWebKit/534.50 (KHTML, like Gecko) Version/5.1 Safari/534.50');
    curl_setopt($ch, CURLOPT_TIMEOUT, 15);
    curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_file);
    $output = curl_exec($ch);
    $infos = curl_getinfo($ch);
    curl_close($ch);
    echo "<pre>";
    print_r($infos);
    print_r($output);
    echo "</pre>";} else {
    $time = time();
    //初始化变量
    $login_url = 'http://weixin.sogou.com/antispider/?from=%2fweixin%3Fie%3dutf8%26query%3d乐视倒闭%26type%3d2%26dp%3d1%26page%3d1';    $verify_code_url = 'http://weixin.sogou.com/antispider/util/seccode.php?tc=' . $time;    $curl = curl_init();
    $timeout = 5;
    curl_setopt($curl, CURLOPT_URL, $login_url);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, $timeout);
    curl_setopt($curl, CURLOPT_HEADER, $header);
    curl_setopt($curl, CURLOPT_USERAGENT, 'User-Agent:Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_8; en-us) AppleWebKit/534.50 (KHTML, like Gecko) Version/5.1 Safari/534.50');
    curl_setopt($curl, CURLOPT_COOKIEJAR, $cookie_file); //获取COOKIE并存储
    $contents = curl_exec($curl);
    curl_close($curl);
    //进行提取Form信息
    $pregInput = '<input[\s\S]*?name=[\'|"](.*?)[\'|"][\s\S]*?value=[\'|"](.*?)[\'|"][\s\S]*?>';
    preg_match_all($pregInput, $contents, $math);
    $formData = array();
    foreach ($math[1] as $key => $value) {
        $formData[$value] = $math[2][$key];
    }    //print_R($formData);    //取出验证码
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_URL, $verify_code_url);
    curl_setopt($curl, CURLOPT_COOKIEFILE, $cookie_file);
    curl_setopt($curl, CURLOPT_HEADER, $header);
    curl_setopt($curl, CURLOPT_USERAGENT, 'User-Agent:Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_8; en-us) AppleWebKit/534.50 (KHTML, like Gecko) Version/5.1 Safari/534.50');
    curl_setopt($curl, CURLOPT_HEADER, 0);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
    $img = curl_exec($curl);
    curl_close($curl);    $fp = fopen("verifyCode.jpg", "w");
    fwrite($fp, $img);
    fclose($fp);}function getSogouHead()
{
    $head = array(
        'Accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
        'Accept-Encoding:gzip, deflate, sdch',
        'Accept-Language:zh-CN,zh;q=0.8',
        'Cache-Control:max-age=0',
        'Connection:keep-alive',
        'Host:weixin.sogou.com',
        'Upgrade-Insecure-Requests:1',
    );
    return $head;
}
?>
<!DOCTYPE html>
<html>
<head>
<title>SOGOU</title>
<meta charset="utf8">
</head>
<body>
<form action="" method="POST">
<?php
foreach ($formData as $key => $value) {
    ?>
<input type="hidden" name="<?php echo $key ?>" value="<?php echo $value ?>">
<?php
}
?>
输入验证码： <input type="text" name="c"><img src="verifyCode.jpg">
<input type="hidden" name="tc" value="<?php echo $time; ?>">
<input type="submit" value="提交" name="dosubmit">
</form>
</body>
</html>

解决方案 »

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你提交了验证码表单后，他不就引导你回到先前的搜索页了吗？
跟着跳，很重要！
但我没看到 CURLOPT_FOLLOWLOCATION
咦，他居然没有使用 cookie！那他是如何维持现场的？
哦，原来用 js 构造了 cookie另外你的表单缺少 <input type="hidden" name="r" id="from" value="%2Fweixin%3Fie%3Dutf8%26query%3D%E4%B9%90%E8%A7%86%E5%80%92%E9%97%AD%26type%3D2%26dp%3D1%26page%3D1" > 控件
那 js 构造的 cookie 也有吗？
cookie是用 CURLOPT_COOKIEJAR 获取的，然后保存并传递的
你贴出的头信息中根本就么有 SetCookie 指令
也就是他并没有通过 http 头设置 cookie但目标 url 中，可以看到 js 设置 cookie 的代码你没去搞清楚他的运行机制和流程，当然就出问题了