Description:
------------
I suspect that the demo fwrite_stream(..) example contains a tiny buglet...

in:

function fwrite_stream($fp, $string) {
    for ($written = 0; $written < strlen($string); $written += $fwrite) {
        $fwrite = fwrite($fp, substr($string, $written));
        if (!$fwrite) {
            return $fwrite;
        }
    }
    return $written;
}

the snipet:

 if (!$fwrite) {
            return $fwrite;
        }

should read:

 if (!$fwrite) {
            return $written;
        }

Since if the write fails on the second iteration, it should return what has been written so far, not zero. Also, another improvement is probably:

 if ($fwrite===false) {
            return $fwritten;
        }

But not strictly necessary in this instance because the loop wont be entered if there is nothing to be written.

Chris Hale.

Reproduce code:
---------------
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From manual page: function.fwrite
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