$host = "111.111.111.111"; // your MySQL host i.e. the server on which the database is, usually localhost
$user = "用戶名"; // your MySQL username
$pass = "密碼"; // your MySQL password
$db = "資料庫名"; // the database to which you're trying to connect to

mysql --user=root -p
mysql> use mysql
mysql> GRANT SELECT,INSERT,UPDATE,DELETE ON *.* TO dbname@111.111.111.111 identified by '密碼';
mysql> FLUSH PRIVILEGES;