tp5连接两个库

config.php增加

'db2' => [
'type'            => Env::get('DB_TYPE', 'mysql'),
'hostname'        => Env::get('DB_HOST', '127.0.0.1'),
'database'        => Env::get('DB_DATABASE', 'database_name'),
'username'        => Env::get('DB_USERNAME', 'test'),
'password'        => Env::get('DB_PASSWORD', 'test111'),
'hostport'        => Env::get('DB_PORT', '3306'),
'charset'         => Env::get('DB_CHARSET', 'utf8'),
'prefix'          => Env::get('DB_PREFIX', 'de_'),
],
或者
'db2'=>require_once('database2.php'),

模型中

public function __construct($data = [])
{
    $osDb = Config::get('os_db');
    $this->connection = $osDb;
    parent::__construct($data);
}