MongoDB查询结果转为数组

//数据同步
public function data_Sync(){

    $filter = [];
    $options = [  "projection" => ["_id" => 0]];//消除字段 先去掉_id

    // 查询数据
    $query = new \MongoDB\Driver\Query($filter, $options);
    $cursor = $this->mongodb->executeQuery("test.mydata", $query);

    $cursor =  $cursor->toArray();//tp5函数转一次

    foreach ($cursor as $key=>$value){
         $value = ((array)$value);//直接强转array类型

         $res = Db::name("sreadreport")->insert($value);

    }

}    $filter =