mongo中的_id是一个objectid对象类型,不管是查询时作为条件,还是列表时展示内容,都需要进行一下抓换

查询时要转为objectid对象

列表时要把对象转成字符串覆盖回_id字段

        $filter['_id']=new MongoDB\BSON\ObjectId($params['id']);;
        $options=[];
        $collect='.modelHis';
        $mongoManger = new MongoDB\Driver\Manager("mongodb://127.0.0.1:27017");
        $query = new MongoDB\Driver\Query($filter, $options);
        $cursor = $mongoManger->executeQuery($dbName.$collect, $query);
        if($cursor->isDead()){
            //return [];
        }
        $items=[];
        foreach ($cursor as $document) {
            $document->_id=$document->_id->__toString();
            $items[]=get_object_vars($document);
        }