Description:
------------
On windows it works fine, but, with *nix and possibly *bsd, the context parameter to file_get_contents does absolutely nothing, meaning you can't change the method, submit post data, change the bind ip, etc, with file_get_contents().

The example shown in the docs does not work http://us3.php.net/manual/en/wrappers.http.php

Reproduce code:
---------------
<?php

$postdata = http_build_query(
   array(
       'var1' => 'some content',
       'var2' => 'doh'
   )
);

$opts = array('http' =>
   array(
       'method'  => 'POST',
       'header'  => 'Content-type: application/x-www-form-urlencoded',
       'content' => $postdata
   )
);

$context  = stream_context_create($opts);

echo file_get_contents('http://www.p2p-network.net/vars.php', false, $context);

?>

Expected result:
----------------
i expect the returned post array from this script to be populated, which it would be if you did an actually post query on http://www.p2p-network.net/vars.php

if you run this from windows, it works fine and shows up like this:
$_POST = array (
  'var1' => 'some content',
  'var2' => 'doh',
);

Actual result:
--------------
if you try the same code on *nix you get an empty post array:
$_POST = array (
);
and if you look at the $_SERVER array you can see that none of the context options did anything