If you have a managed server, follow the steps to Connect to a MySQL5 Database on a 1&1 Managed Server instead.
To be able to connect to a MySQL database, you will need the following MySQL Database Connection Credentials:
Copy the script shown below into a .php file, replacing the hostname, database, username, and password with your Database Name and your password, etc., then upload the file to your webspace. This script is only for connecting to MySQL. Additional commands will need to be added manually.