php从源url获取重定向的url - php get url of redirect from source url

php get url of redirect from source url

本文关键字：url 重定向获取 php 从源 | 更新日期: 2023-09-27

我有这个链接：

http://libero-news.it.feedsportal.com/c/34068/f/618095/s/2e34796f/l/0L0Sliberoquotidiano0Bit0Cnews0C12735670CI0Esaggi0Eper0Ele0Eriforme0Ecostituzionali0EChiaccherano0Ee0Eascoltano0Bhtml/story01.htm

如果你访问它，这将变成：

http://www.liberoquotidiano.it/news/1273567/I-saggi-per-le-riforme-costituzionali-Chiaccherano-e-ascoltano.html

如何从第一个链接获得第二个链接？

我已经尝试过了，但没有成功，给我返回了相同的第一个链接：

<?php
$url="http://libero-news.it.feedsportal.com/c/34068/f/618095/s/2e34796f/l/0L0Sliberoquotidiano0Bit0Cnews0C12735670CI0Esaggi0Eper0Ele0Eriforme0Ecostituzionali0EChiaccherano0Ee0Eascoltano0Bhtml/story01.htm";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
$a = curl_exec($ch);
print_r($a);echo"<br>";
if(preg_match('#Location: (.*)#', $a, $r)){
   $l = trim($r[1]);
   echo $l;
}else echo "not working";

非常感谢。

多亏了@king-isaac，下面的代码经过了测试，可以工作了。

<?php 
$url="http://libero-news.it.feedsportal.com/c/34068/f/618095/s/2e34796f/l/0L0Sliberoquotidiano0Bit0Cnews0C12735670CI0Esaggi0Eper0Ele0Eriforme0Ecostituzionali0EChiaccherano0Ee0Eascoltano0Bhtml/story01.htm";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, true); // true to include the header in the output.
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); // Must be set to true true to follow any "Location: " header that the server sends as part of the HTTP header.
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); // true to return the transfer as a string of the return value of curl_exec() instead of outputting it directly.
$a = curl_exec($ch); // $a will contain all headers
$finalUrl = curl_getinfo($ch, CURLINFO_EFFECTIVE_URL); // This is what you need, it will return you the last effective URL
// Uncomment to see all headers
/*
echo "<pre>";
print_r($a);echo"<br>";
echo "</pre>";
*/
echo $finalUrl; // Voila
?>

您可以在不使用CURL的情况下完成此操作。让它变得简单而简短。

<?php
$url="http://libero-news.it.feedsportal.com/c/34068/f/618095/s/2e34796f/l/0L0Sliberoquotidiano0Bit0Cnews0C12735670CI0Esaggi0Eper0Ele0Eriforme0Ecostituzionali0EChiaccherano0Ee0Eascoltano0Bhtml/story01.htm";
$headers = @get_headers($url);
$final_url = "";
foreach ($headers as $h)
{
    if (substr($h,0,10) == 'Location: ')
    {
    $final_url = trim(substr($h,10));
    break;
    }
}
echo $final_url;
?>

您可以使用curl_getinfo获取请求的最终URL。

curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_exec($ch);
$url = curl_getinfo($ch, CURLINFO_EFFECTIVE_URL);

如果您想获得第一个重定向：

function getRedirect($url){
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36');
    curl_setopt($ch, CURLOPT_HEADER, true);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $responseHeaders = curl_exec($ch);
    curl_close($ch);
    if(preg_match_all("/^location: (.*?)$/im", $responseHeaders, $results))
        return $results[1][0];
}