posting from PHP to ASP page returns raw source code

Question

I am trying to post data from PHP to a ASP page. This is the PHP code:

$url = 'test.asp';
$data = array('q' => 'test');

$options = array(
    'http' => array(
        'header'  => "Content-type: application/x-www-form-urlencoded\r\n",
        'method'  => 'POST',
        'content' => http_build_query($data)
    )
);
$context  = stream_context_create($options);
$result = file_get_contents($url, false, $context);
if ($result === FALSE) { 
  //Handle error
 }

var_dump($result);

And this is the ASP page:

<%Response.Write(request("q"))%>

When I call the PHP page it prints <%Response.Write(request("q"))%>. I am testing this structure on IIS with both classic Asp and Php installed.

Answer 1

While test.asp is, in some contexts, a relative URL, it isn't here.

file_get_contents will only make an HTTP request if you pass it an absolute URL (e.g. one starting with http://www.example.com/).

Passing it a file name will cause it to read from the local filesystem, which bypasses any HTTP server module that would execute the ASP code.