重定向 referer 的功能哪里出错了？

Question

我使用这个index.php将用户重定向到另一个页面，这是它的引用程序功能。如果用户来自没有列出的推荐人，它应该转到特定的url。

除了用户来自没有列出的任何引用者之外，一切都进行得很好。在这种情况下，站点不做任何事情(在同一域中为空白)。我看不出哪里有错误。

<?php
if (isset($_POST["redirect"])) {
  $hash = $_POST["redirect"];

  if ($hash !== "") {
    $origin = isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : "";
    $destination = "";

    if($origin == 'http://www.ads1.net/click/cc1/') {
      $destination = 'http://www.example1.com';
    } else if($origin == 'http://www.ads2.net/click/cc2/') {
      $destination = 'http://www.example2.com';
    } else if($origin == 'http://www.ads3.net/click/cc3/') {
      $destination = 'http://www.example3.com';
    } else if($origin == 'http://www.ads4.net/click/cc4/') {
      $destination = 'http://www.example4.com';
    } else if($origin == 'http://www.ads5.net/click/cc5/') {
      $destination = 'http://www.example5.com';
    } else {
      $destination = 'http://www.anothersite.com';
    }

    if($destination != "") {
      echo "<script>window.location.href = '".$destination."';</script>";
    }
  }
}
?>

Answer 1

Try changing your code to this. If $_POST['redirect'] is not set, it will redirect to http://www.anothersite.com. Otherwise if $_POST['redirect'] is not empty, it will redirect according to $_SERVER['HTTP_REFERER']. The only case in which the user will not be redirected is if $_POST['redirect'] is set but empty (i.e. $_POST['redirect'] === ''); I have left a comment in an else block there, you may decide to redirect from there as well?

$destination = "";
if (isset($_POST["redirect"])) {
  $hash = $_POST["redirect"];

  if ($hash !== "") {
    $origin = isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : "";

    if($origin == 'http://www.ads1.net/click/cc1/') {
      $destination = 'http://www.example1.com';
    } else if($origin == 'http://www.ads2.net/click/cc2/') {
      $destination = 'http://www.example2.com';
    } else if($origin == 'http://www.ads3.net/click/cc3/') {
      $destination = 'http://www.example3.com';
    } else if($origin == 'http://www.ads4.net/click/cc4/') {
      $destination = 'http://www.example4.com';
    } else if($origin == 'http://www.ads5.net/click/cc5/') {
      $destination = 'http://www.example5.com';
    } else {
      $destination = 'http://www.anothersite.com';
    }
  }
  else {
    // $_POST['redirect'] is set but empty (=== '')
    // if you want to redirect for this case, add a URL here as well e.g.
    // $destination = 'http://www.anothersite.com'
   }
}
else {
  $destination = 'http://www.anothersite.com';
}
if($destination != "") {
  echo "<script>window.location.href = '".$destination."';</script>";
}