screen/application/service/AppBegin.php

<?php
namespace app\service;

use app\service\pay_user\PayUser;

class AppBegin{
    public function run($params){
        //$type=config('site.settle_type');
        //PayUser::setType($type);

        bcscale(2);
        define('TIME_C','created_at');
        define('TIME_U','updated_at');
        define('TIME_D','deleted_at');
    }
}