Description:
------------
I'm trying to set expect.logfile to use the php output buffer but it is not working.  I get nothing in the buffer.

Reproduce code:
---------------
ob_start();
ini_set('expect.loguser',0);
ini_set('expect.logfile','php://output');
ini_set('expect.timeout',10);
ini_set('expect.match_max',1000);

$e = fopen('expect://echo Just a test','r');

switch (expect_expectl($e,array(array('something','something')))) {
        case EXP_TIMEOUT:
        case EXP_EOF:
        default:
                ob_flush();
                break;
}

fclose($e);

Expected result:
----------------
output of 'Just a test'

Actual result:
--------------
no output