its working!
thanks for everyone’s help. i phoned fasthosts. it was all my fault, of course, i had my password wrong.
anyway.
the answer was:
define(‘DB_NAME’, ‘floppydb’);
define(‘DB_USER’, ‘floppy’);
define(‘DB_PASSWORD’, ‘xxxxxx’);
define(‘DB_HOST’, ‘213.171.218.245’);
which is exactly the information they give about your database in fasthosts admin.