通过使用https读取子域WHILE进行转发的PHP脚本

Question

I've got a php script that forwards the user based on what subdomain the wrote in the url.

Now, normally you would read the HTTP_URI, but my webhost are using iframe, so I have to read the HTTP_REFERRER.

now to the problem, when accessing the site "normal", like mysite.com or

http://example.com

it works fine, however, when using https, it only shows a white page.

This is my code:

<?PHP

$REFERRER = $_SERVER['HTTP_REFERER'];

// Or other method to get a URL for decomposition 
$domain = substr($REFERRER, strpos($REFERRER, '://')+3); 
$domain = substr($domain, 0, strpos($domain, '/')); 
// This line will return 'en' of 'en.example.com' 
$subdomain = substr($domain, 0, strpos($domain, '.')); 
//Echo $subdomain;

header("Location: https://example2.com/'$subdomain");
?>

.. Anybody got any suggestions? Rewriting doesn't work on subdomains on this server.

Answer 1

As discussed in the comments the problem is "blocked loading mixed active content".

An iframe or its contents can not be loaded over http if the site containing the iframe is loaded via https.