Description:
------------
hello, i'm uploading files through a form and things have been working fine in the past, but recently i have begun to get the error code '6', which is undocumented in the PHP manual.

Array
(
    [name] => Brigitte-Normal.pfa /*small font file*/
    [type] => 
    [tmp_name] => 
    [error] => 6
    [size] => 0
)

Reproduce code:
---------------
the above output is being produced by this code:

die(print_r($file));

where $file is an element of the superglobal $_FILES obtained with:

foreach($_FILES as $label => $file)
{
    /*... FILE HANDLING CODE ...*/
}

Expected result:
----------------
The expected result would obviously be one of the documented error codes (0 - 4)

Actual result:
--------------
The actual result is an error code '6', which is undocumented.