卷曲重定向无法正常工作 [英] curl redirect not properly working
问题描述
我的函数应该获取$ url的目标URL：
My function is supposed to get the destination URL of $url:
function getUrl($url)
{
$user_agent='Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)';
$ch = curl_init();
$timeout = 10; // set to zero for no timeout
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
curl_setopt ($ch, CURLOPT_URL, $url);
curl_setopt ($ch, CURLOPT_USERAGENT, $user_agent);
curl_setopt ($ch, CURLOPT_HEADER, 1);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_FOLLOWLOCATION, true);
$curl = curl_exec($ch);
$header = curl_getinfo($ch);
curl_close($ch);
return $header;
}
function get_url_list() {
$url = "http://www.webliste.ch/click.aspx?nr=148252";
$result=getUrl($url);
print_r($result);echo "<br>";
}
get_url_list();
结果如下：
Array
(
[url] => http://www.webliste.ch/click.aspx?nr=148252
[content_type] => text/html; charset=iso-8859-1
[http_code] => 200
[header_size] => 320
[request_size] => 139
...
[redirect_time] => 0
[certinfo] => Array
(
)
[redirect_url] =>
)
我很茫然，因为URL正在重定向，并且如果我回显$ ch，我得到了重定向的网站。
I am at a loss, because the URL is redirecting, and if I echo $ch, I get the redirected website.
有人知道这是什么原因吗？
Anyone know what's the cause of this?
以下操作无效
$final_url = curl_getinfo($ch, CURLINFO_EFFECTIVE_URL);
输出与$ result ['url']相同，这不是我想要的
The output is the same as $result['url'], which is not what I am looking for.
推荐答案
我已经分析了实际发生的情况，现在我看到重定向不是由该重定向标头引起的页面而是使用JavaScript即时提交表单并将您重定向到起始页面。
I've analyzed what actually happens and now I see that the redirect is not caused by a redirect header on that page instead it's with JavaScript instantly submitting a form and redirecting you to the start page.
可能很难确定页面的URL，但是您可以做的就是寻找< form> 标记，然后在其 action 属性中找到URL。
Might be hard to determine the URL of the page but what you can do is look for a <form> tag and then find the URL in its action attribute.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="de">
<head id="Head1">
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<meta name="ROBOTS" content="NOINDEX, NOFOLLOW" />
</head>
<body>
<form id="form1" action="http://www.taxiherold.ch">
<div id="panGo" align="center">
<script type="text/javascript">
document.getElementById('form1').submit();
</script>
</div>
</form>
</body>
</html>
所以现在尝试下面的代码：
So try this code now:
$ch = curl_init('http://www.webliste.ch/click.aspx?nr=148252');
curl_setopt ($ch, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)');
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt ($ch, CURLOPT_FOLLOWLOCATION, false);
$data = curl_exec($ch);
$dom = new DOMDocument();
@$dom->loadHTML($data);
$xpath = new DOMXPath($dom);
$url = $xpath->query('//body/form');
$url = ($url->length == 1 ? $url->item(0)->getAttribute('action') : null);
var_dump($url);
将输出：
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