Alter values of referer

[vizz]

How to Convert PHP HTTP_REFERER to Null referer
How to Convert JS document.referrer to Null referer

Forexample site http://www.refnull.com/

[cereal]

Regarding PHP try this:

<?php

$url = $_SERVER['QUERY_STRING'];

if($_GET)
{
    if(filter_var($url, FILTER_VALIDATE_URL) !== FALSE)
    {
        header('Location: ' . $url);
    }
}

Save it, for example, as noref.php, then use a link like this:

http://yourwebiste.tld/noref.php?http://otherwerbsite.tld

I'm not sure it's enough, but I've made few tests and seems to work.

[vizz]

I used your code. For following link I got referer

<a href="http://localhost/code/NullRef/noref.php?http://localhost/code/NullRef">Null Ref test link </a>

<?php    
$ref=$_SERVER['HTTP_REFERER'];
echo"$ref";
?>

Output

http://localhost/code/NullRef/