phpcms多数据库配置连接方法

return array (
  'default' => array (
    'hostname' => 'localhost',
    'database' => 'db1',
    'username' => 'root',
    'password' => '123456',
    'tablepre' => 'v9_',
    'charset' => 'utf8',
    'type' => 'mysql',
    'debug' => true,
  ),
  'db2' => array (
    'hostname' => 'localhost',
    'database' => 'db2',
    'username' => 'root',
    'password' => '123456',
    'tablepre' => 'p_',
    'charset' => 'utf8',
    'type' => 'mysql',
    'debug' => true,
  ),
  'db3' => array (
    'hostname' => '192.168.1.100',
    'database' => 'remote_db',
    'username' => 'user',
    'password' => 'pass',
    'tablepre' => '',
    'charset' => 'utf8',
    'type' => 'mysql',
    'debug' => true,
  ),
);

// 加载内容模型
$this->content_db = pc_base::load_model('content_model');
// 切换到 db2 数据库
$this->content_db->set_db('db2');
<p>// 执行查询
$data = $this->content_db->query("SELECT * FROM p_news LIMIT 5")->fetch_all();</p>

$db = pc_base::load_app_class('db_factory')->get_instance('db2');
$result = $db->select('*', 'p_news', '', '', '', 'id');
print_r($result);