Description:
------------
I have a piece of code crawling an ftp site, ftp_chdir()'ing and ftp_get()'ing a lot of files troughout the ftp dirtree.

I have noticed, that after a failed ftp_get() the read buffer often goes out of sync with the issued commands.
In other words; an ftp_chdir() command shows a warning with the result message from a previous command.

Here's an example PHP warning:
<b>Warning</b>: ftp_chdir() [<a href='function.ftp-chdir'>function.ftp-chdir</a>]: ABOR command successful. in <b>/home/frozen/frozftp.class.php</b> on line <b>93</b><br />



Reproduce code:
---------------
The code this error originates from has the following snippet in it, which is called for each dir it's supposed to crawl:
if ($SFTP->cwd($dirname) === false) { $SFTP->abor(); return false; }

The cwd and abor functions from the SFTP class:
        function cwd($path)
        {
                return (ftp_chdir($this->fd,$path)) ? true : false;
        }
        function abor()
        {
                ftp_raw($this->fd,"ABOR");
        }

Expected result:
----------------
I would expect the ftp_chdir() function to return a true value

Actual result:
--------------
A warning message from the ftp_chdir() with the result from a previous command in it.