Description:
------------
http://www.php.net/manual/en/function.stream-notification-callback.php

Per that I'd wouldn't expect the following test scripts to produce errors but they 
do.

Test script:
---------------
<?php
stream_context_create(array('notification' => 'callback'));
?>

<?php
$ctx = stream_context_create();
stream_context_set_option($ctx, array('notification' => 'callback'));
?>

Expected result:
----------------
(blank)

Actual result:
--------------
Warning: stream_context_create(): options should have the form ["wrappername"]
["optionname"] = $value in /path/to/file.php on line 2