读写分离的数据库操作类
composer require digphp/database
$config = [
'master'=>[...],
'slave'=>[[...],[...],...]
];
$db = new \DigPHP\Database\Db($config);
$db->master()->insert delete ...;
$db->slave()->get select ...;
$db->get(...);
$db->select(...);
$db->delete(...);
// 更多方法请参考 (Medoo)[https://github.com/catfan/Medoo]