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I have two databases on my server, and wanted to know is there a way to access both databases from wordpress? My thought is adding the second set of credentials to the wp-config.php.

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You can easily set up another $wpdb object to access your other database.

$mydb = new wpdb(DB_USER, DB_PASSWORD, DB_NAME, DB_HOST);
var_dump($mydb);

That, of course, uses the default connection credentials but if you defined different constants and used those, is should work just fine.

If this other database is not a WordPress database, you won't have some of the functionality offered by the wpdb class but the basics should work if you write the SQL.

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