php中的mongodbselect常用操作代码示例_PHP

测试数据：

代码如下:

{ "_id" : 1, "title" : "红楼梦", "auther" : "曹雪芹", "typeColumn" : "test", "money" : 80, "code" : 10 }
{ "_id" : 2, "title" : "围城", "auther" : "钱钟书", "typeColumn" : "test", "money" : 56, "code" : 20 }
{ "_id" : 3, "title" : "朝发白帝城", "auther" : "李白", "typeColumn" : "test", "money" : 30, "code" : 30 }
{ "_id" : 4, "title" : "将近酒", "auther" : "李白", "money" : 90, "code" : 40 }

1、取表条数

代码如下:

> db.books.count();
4

> db.books.find().count();
4

> db.books.count({auther: "李白" });
2

> db.books.find({money:{$gt:40,$lte:60}}).count();
1

> db.books.count({money:{$gt:40,$lte:60}});
1

php代码如下，按顺序对应的：

代码如下:

$collection->count(); //结果：4
$collection->find()->count(); //结果：4
$collection->count(array("auther"=>"李白")); //结果：2
$collection->find(array("money"=>array('$gt'=>40,'$lte'=>60)))->count(); //结果：1
$collection->count(array("money"=>array('$gt'=>40,'$lte'=>60))); //结果：1

提示：$gt为大于、$gte为大于等于、$lt为小于、$lte为小于等于、$ne为不等于、$exists不存在、$in指定范围、$nin指定不在某范围

2、取单条数据

代码如下:

> db.books.findOne();
{
"_id" : 1,
"title" : "红楼梦",
"auther" : "曹雪芹",
"typeColumn" : "test",
"money" : 80,
"code" : 10
}

> db.books.findOne({auther: "李白" });
{
"_id" : 3,
"title" : "朝发白帝城",
"auther" : "李白",
"typeColumn" : "test",
"money" : 30,
"code" : 30
}

php代码如下，按顺序对应的

代码如下:

$collection->findOne();
$collection->findOne(array("auther"=>"李白"));

3、find snapshot 游标

代码如下:

> db.books.find( { $query: {auther: "李白" }, $snapshot: true } );
{ "_id" : 3, "title" : "朝发白帝城", "auther" : "李白", "typeColumn" : "test", "money" : 30, "code" : 30 }
{ "_id" : 4, "title" : "将近酒", "auther" : "李白", "money" : 90, "code" : 40 }

php代码如下：

代码如下:

/**
* 注意:
* 在我们做了find()操作，获得 $result 游标之后，这个游标还是动态的.
* 换句话说,在我find()之后,到我的游标循环完成这段时间,如果再有符合条件的记录被插入到collection,那么这些记录也会被$result 获得.
*/
$result = $collection->find(array("auther"=>"李白"))->snapshot();
foreach ($result as $id => $value) {
var_dump($value);
}

4、自定义列显示

代码如下:

> db.books.find({},{"money":0,"auther":0}); //money和auther不显示
{ "_id" : 1, "title" : "红楼梦", "typeColumn" : "test", "code" : 10 }
{ "_id" : 2, "title" : "围城", "typeColumn" : "test", "code" : 20 }
{ "_id" : 3, "title" : "朝发白帝城", "typeColumn" : "test", "code" : 30 }
{ "_id" : 4, "title" : "将近酒", "code" : 40 }

> db.books.find({},{"title":1}); //只显示title列
{ "_id" : 1, "title" : "红楼梦" }
{ "_id" : 2, "title" : "围城" }
{ "_id" : 3, "title" : "朝发白帝城" }
{ "_id" : 4, "title" : "将近酒" }

/**
*money在60到100之间，typecolumn和money二列必须存在
*/
> db.books.find({money:{$gt:60,$lte:100}},{"typeColumn":1,"money":1});
{ "_id" : 1, "typeColumn" : "test", "money" : 80 }
{ "_id" : 4, "money" : 90 }

php代码如下，按顺序对应的：

代码如下:

$result = $collection->find()->fields(array("auther"=>false,"money"=>false)); //不显示auther和money列

$result = $collection->find()->fields(array("title"=>true)); //只显示title列

/**
*money在60到100之间，typecolumn和money二列必须存在
*/
$where=array('typeColumn'=>array('$exists'=>true),'money'=>array('$exists'=>true,'$gte'=>60,'$lte'=>100));
$result = $collection->find($where);

5、分页

代码如下:

> db.books.find().skip(1).limit(1); //跳过第条，取一条
{ "_id" : 2, "title" : "围城", "auther" : "钱钟书", "typeColumn" : "test", "money" : 56, "code" : 20 }

这根mysql，limit,offset有点类似，php代码如下：

代码如下:

$result = $collection->find()->limit(1)->skip(1);//跳过 1 条记录，取出 1条

6、排序

代码如下:

> db.books.find().sort({money:1,code:-1}); //1表示降序 -1表示升序,参数的先后影响排序顺序
{ "_id" : 3, "title" : "朝发白帝城", "auther" : "李白", "typeColumn" : "test", "money" : 30, "code" : 30 }
{ "_id" : 2, "title" : "围城", "auther" : "钱钟书", "typeColumn" : "test", "money" : 56, "code" : 20 }
{ "_id" : 1, "title" : "红楼梦", "auther" : "曹雪芹", "typeColumn" : "test", "money" : 80, "code" : 10 }
{ "_id" : 4, "title" : "将近酒", "auther" : "李白", "money" : 90, "code" : 40 }

php代码如下：

代码如下:

$result = $collection->find()->sort(array('code'=>1,'money'=>-1));

7、模糊查询

代码如下:

> db.books.find({"title":/城