[ 'driver' => 'mysql', 'host' => '127.0.0.1', 'database' => 'blog', 'username' => 'root', 'password' => '123456', 'port' => 3306, 'charset' => 'utf8mb4', 'collation' => 'utf8mb4_general_ci', 'prefix' => 'eb_', ], 'db2' => [ 'driver' => 'mysql', 'host' => '127.0.0.1', 'database' => 'test', 'username' => 'root', 'password' => 'root', 'charset' => 'utf8', 'collation' => 'utf8_unicode_ci', 'prefix' => '', ], ];