php通过mysqli连接mysql数据库

Question

I try to connect to a mysql database via PHPs mysqli.

define('DB_SERVER', '127.0.0.3');
define('DB_USERNAME', '570466');
define('DB_PASSWORD', 'pssst!');
define('DB_NAME', 'db570466');

/* Attempt to connect to MySQL database */
$mysqli = new mysqli(DB_SERVER, DB_USERNAME, DB_PASSWORD, DB_NAME);

And get the following error: Warning: mysqli::mysqli(): (HY000/1045): Access denied for user '570466'@'localhost' (using password: YES) in /.../config.php on line 16

The strange thing is, that Access is denied for my user @localhost , but I don't connect to localhost. According to my hoster (domainFactory), I can also connect to the DB via mysql5.my-domain.tld , but that gives me the same output.

What am I missing?

Answer 1

According to the help pages , database usernames for DomainFactory should start with "db":

Den Usernamen Ihrer Datenbank sehen Sie im Kundenmenü unter "MySQL-Datenbanken". Er hat das Format db12345 bzw. db12345_1 bei weiteren Datenbanken.

(translated:)

The username for your database can be found in the customer portal under "MySQL databases". It has the format db12345 or db12345_1 for subsequent databases.

So you should be able to connect to the database "db570466" using the username db570466 instead of just 570466 .

Answer 2

You are using 127.0.0.3, but it is rejecting "localhost". So use "localhost" instead. And be sure the user 570766@localhost has permission.