方法一
类似 laravel
$user = User::get(1);
$user->name = 'zhongwei';
$user->save();
thinkphp 3.2.3 的做法
$Config = M('Config', 'zh_');
//$tel = $Config->where('id=1')->find();
$Config->where('id=1')->setField('val', 123);
参考
https://www.kancloud.cn/manual/thinkphp5/135189