TP5 order multi condition sort

// Single conditional sort 
$user = $this->where(['parentId'=>0)->field('userId,userName,userSort,isShow')->order('userSort', 'asc')->select();
 
// Multiple conditional sorting , You can add one more order
$user = $this->where(['parentId'=>0)->field('userId,userName,userSort,isShow')->order('userSort', 'asc')->order('userId', 'asc')->select();
 
// Multiple conditional sorting , You can write it all order Inside 
$user = $this->where(['parentId'=>0)->field('userId,userName,userSort,isShow')->order('userSort', 'asc')->order('userSort asc,userId asc')->select();


//tp5.1
Db::table('think_user')
->where('status', 1)
->order(['order','id'=>'desc'])
->limit(5)
->select();