MongoDB查询结果转为数组

//数据同步
public function data_Sync(){

    $filter = [];    $options = [  'projection' => ['_id' => 0]];//排除字段 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);    }}