Description:
------------
fopen on SplFileObject seems to fail on windows with an 'Invalid argument' warning.

this bug causes the SplFileObject_fgetcsv_* tests to fail on windows.


It should be noted, that on the other hand:

<?php
$fp = new SplFileObject('fgetcsv.csv', 'w+');
$fp1 = fopen('fgetcsv.csv', 'w+');

does work ok.

Test script:
---------------
<?php
var_dump(fopen('SplFileObject::fgetcsv.csv', 'w+'));

Expected result:
----------------
resource(5) of type (stream)

Actual result:
--------------
Warning: fopen(SplFileObject::fgetcsv.csv): failed to open stream: Invalid argument in C:\inetpub\wwwroot\scrap.php on line 2
bool(false)