thinkphp5.0 model 未重新new where 条件被重复利用

问题遇到的现象和发生背景

thinkphp5.0 php7.2 nginx1.20 mysql5.7

问题相关代码，请勿粘贴截图

        $twhere1 = [['pipeitime','between',['1648656000','1648742359']],['shanghu_name','in','baidu123'],['status','=',6]];
          $twhere2 = [['pipeitime','between',['1648656000','1648742359']],['shanghu_name','in','baidu123'],['status','=',6]];
        /****************************/
        $twhere1[] = ['class','=',1];
        $twhere2[] = ['class','=',2];
        $roborder = new \app\admin\model\Roborder();

        echo '<hr>';
        $today1 = $roborder->receivePayment($twhere1);

        echo 'sql1:',$roborder->getLastSQL();
        $today1 = array_column($today1,null,'shanghu_name');

        echo '<hr>';
        $today2 = $roborder->receivePayment($twhere2);
        echo 'sql2:',$roborder->getLastSQL();

        echo '<br>';

运行结果及报错内容

sql1:SELECT sum(price) tot,shanghu_name FROM ysk_roborder WHERE pipeitime BETWEEN 1648656000 AND 1648742359 AND shanghu_name = 'baidu123' AND status = 6 AND class = 1 GROUP BY shanghu_name
sql2:SELECT sum(price) tot,shanghu_name,sum(price) tot,shanghu_name FROM ysk_roborder WHERE pipeitime BETWEEN 1648656000 AND 1648742359 AND shanghu_name = 'baidu123' AND status = 6 AND class = 1 AND pipeitime BETWEEN 1648656000 AND 1648742359 AND shanghu_name = 'baidu123' AND status = 6 AND class = 2 GROUP BY shanghu_name

我的解答思路和尝试过的方法

两次 new 就不会出现

我想要达到的结果

只new 一次，就可以不用上一次执行的where

静态调用 不new 不行吗.

twhere1 twhere2 两个条件重复利用了。
你可以使用拼接，在twhere2中删除twhere1相同的条件，在twhere2中拼接twhere1