Codeigniter：我們如何連接兩個數據庫。 如果可以，我們如何同時使用它們

Question

我在CodeIgniter中使用以下代碼來添加數據庫：

$active_group = 'default';
$query_builder = TRUE;

$db['default'] = array(
    'dsn'   => '',
    'hostname' => 'localhost',
    'username' => 'root',
    'password' => '12345',
    'database' => 'saas',
    'dbdriver' => 'mysqli',
    'dbprefix' => '',
    'pconnect' => FALSE,
    'db_debug' => TRUE,
    'cache_on' => FALSE,
    'cachedir' => '',
    'char_set' => 'utf8',
    'dbcollat' => 'utf8_general_ci',
    'swap_pre' => '',
    'encrypt' => FALSE,
    'compress' => FALSE,
    'stricton' => FALSE,
    'failover' => array(),
    'save_queries' => TRUE
);

如何添加第二個數據庫？ 我如何同時使用它們？ 任何幫助將不勝感激！

Answer 1

從文檔：

$db['test'] = array(
    'dsn'   => '',
    'hostname' => 'localhost',
    'username' => 'root',
    'password' => '',
    'database' => 'database_name',
    'dbdriver' => 'mysqli',
    'dbprefix' => '',
    'pconnect' => TRUE,
    'db_debug' => TRUE,
    'cache_on' => FALSE,
    'cachedir' => '',
    'char_set' => 'utf8',
    'dbcollat' => 'utf8_general_ci',
    'swap_pre' => '',
    'compress' => FALSE,
    'encrypt' => FALSE,
    'stricton' => FALSE,
    'failover' => array()
);

在模型中，您可以編寫：

function method()
{
  $test = $this->load->database('test', TRUE); // the TRUE paramater tells CI that you'd like to return the database object.

  $query = $test->select('first_name, last_name')->get('person');
  var_dump($query);
}

閱讀更多信息（ http://www.codeigniter.com/user_guide/database/configuration.html ）