ftp_login

If the user/pass combo isn't accepted, the function returns a 0. However,
it also outputs an ugly error message to the browser, even if theres not a
syntax/parse error.

Try putting an @ before the function name to avoid any error output, and
then you can check the return value of 0 or 1 on your own.

Note that the "int ftp_stream value" is the result of your
ftp_connect(string host, int [port]) function.
Example: 
$con = ftp_connect("127.0.0.1",21);
$ftp_login($con,"user","password");

Please do not forget, like I did!