use app\ciyuan_back\model\Website as WebsiteModel;

参数为n

n为正整数

$result = WebsiteModel::limit(1)->select();

显示1条记录

$result = WebsiteModel::limit(10)->select();

显示10条记录

不传参

$result = WebsiteModel::limit()->select();

报错：Missing argument 1 for think\db\Query::limit()

参数为0

显示所有记录

如果想查询所有记录，可以直接使用 $result = WebsiteModel::select();。

参数为-1

$result = WebsiteModel::limit(-1)->select();
报错：SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '-1' at line 1