php - 如何重定向保留原始推荐人字段？

Question

我有以下 PHP 重定向脚本：

if ($country=="IL") { header('Location: http://iquality.itayb.net/index-he.html'); }
else { header('Location: http://iquality.itayb.net/index-en.html'); }

根据$country's 的值，这会将用户重定向到不同的页面。推荐人成为重定向页面本身。

如何保留原始推荐人字段？

Answer 1

您不能使用header('Referer: SOME_REFERER_URL')，因为浏览器无论如何都会覆盖它。

如果您拥有重定向目标iquality.itayb.net，那么有几种方法可以做到这一点：

1. 在用户会话中保存referer。

   // in your first script save real referer to session
   $_SESSION['REAL_REFERER'] = $_SERVER['HTTP_REFERER'];
   
   // in the redirected script extract referer from session
   $referer = '';
   if (isset($_SESSION['REAL_REFERER'])) {
       $referer = $_SESSION['REAL_REFERER'];
       unset($_SESSION['REAL_REFERER']);
   }
   else {
       $referer = $_SERVER['HTTP_REFERER'];
   }
   

2. 发送referer作为参数：

   // in your first script
   header('Location: http://iquality.itayb.net/index-he.html?referer=' . $_SERVER['HTTP_REFERER']);
   
   // in your refered script extract from the parameter
   $referer = '';
   if (isset($_REQUEST['referer'])) {
       $referer = $_REQUEST['referer'];
   }
   else {
       $referer = $_SERVER['HTTP_REFERER'];
   }
   

如果您想欺骗任何其他服务器，请使用以下内容：

$host = 'www.yourtargeturl.com';
$service_uri = '/detect_referal.php';
$vars ='additional_option1=yes&additional_option2=un';

$header = "Host: $host\r\n";
$header .= "User-Agent: PHP Script\r\n";
$header .= "Content-Type: application/x-www-form-urlencoded\r\n";
$header .= "Referer: {$_SERVER['HTTP_REFERER']} \r\n";
$header .= "Content-Length: ".strlen($vars)."\r\n";
$header .= "Connection: close\r\n\r\n";

$fp = fsockopen("".$host,80, $errno, $errstr);
if (!$fp) {
  echo "$errstr ($errno)<br/>\n";
  echo $fp;
} else {
    fputs($fp, "POST $service_uri  HTTP/1.1\r\n");
    fputs($fp, $header.$vars);
    fwrite($fp, $out);

    while (!feof($fp)) {
        echo fgets($fp, 128);
    }
    fclose($fp);
}