laravel 模型查询按照whereIn排序的示例_php实例_

 $ids = [5,7,3,1,2]; $data = Content::whereIn('id',$ids) ->select('id') ->get(); //查询结果是想按照wherein的顺序排序 //正确写法 $data = Content::whereIn('id',$ids) ->select('id') // ->orderBy(\DB::raw('FIND_IN_SET(id, "' . implode(",", $ids) . '"' . ")")) // ->orderBy(DB::raw("FIND_IN_SET(id, '" . implode(',', $ids) . "'" . ')')) // ->orderByRaw("FIND_IN_SET(id, '" . implode(',', $ids) . "'" . ')') ->orderBy(\DB::raw('FIND_IN_SET(id, "' . implode(",", $ids) . '"' . ")")) ->get();

 //错误写法 $data = Content::whereIn('id',$ids) ->select('id') ->orderByRaw("FIND_IN_SET('id', "' . implode(",", $ids) . '"' . ")") ->get(); //该写法查询顺序是按照id大小正序排序

 //正确写法的sql语句为 select `id` from `contents` order by FIND_IN_SET(id, "5,6,7,4,2,1") asc //错误写法的sql语句为 select `id` from `contents` order by 'FIND_IN_SET(id, "5,6,7,4,2,1")' asc //或者 select `id` from `contents` order by `FIND_IN_SET(id, "5,6,7,4,2,1")` asc //FIND_IN_SET()方法外面不要添加任何符号