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由于项目需要，把项目升级到了php7。但是升级了之后发现mongo扩展不能用了。php7.0以上只支持mongodb扩展了。而mongodb扩展的驱动使用起来比monmgo扩展显得很复杂，啰嗦。在网上找了很久。终于找到了一个比较简洁的mongodb类。语法跟mongo的差不多。清晰，自然。

项目地址https://github.com/mongodb/mongo-php-library

因为项目是国外友人贡献的。所以没有可以看的很明白的文档。这里整理了一些常用的方法。

获取实例

$uri = "mongodb://username:password@host/database";$client = new \MongoDB\Client($uri);

获取集合

$collection = $client->selectCollection('test','test');

获取一条数据

$data = $collection->findOne(['id'=>1]);

获取多条数据

$where = ['type'=>1];$options = array(    'projection' => array('id' => 1, 'age' => 1, 'name' => -1), // 指定返回哪些字段 1 表示返回 -1 表示不返回    'sort' => array('id' => -1), // 指定排序字段    'limit' => 10, // 指定返回的条数    'skip' => 0, // 指定起始位置);$data = $collection->find($where,$options)->toArray();var_dump($data);

去重

$fileName = 'name';$where = ['id' => ['$lt' => 100]]$ret = $this->collection->distinct($fileName,$where);

插入一条数据

$data = array(    'id' => 2,    'age' => 20,    'name' => '张三');$ret = $collection->insertOne($data);$id=$ret->getInsertedId();

批量插入

$data = array(    ['id' => 1, 'age' => 21, 'name' => '1xiaoli'],    ['id' => 2, 'age' => 22, 'name' => '2xiaoli'],    ['id' => 3, 'age' => 23, 'name' => '3xiaoli'],    ['id' => 4, 'age' => 26, 'name' => '4xiaoli'],    ['id' => 5, 'age' => 24, 'name' => '5xiaoli'],    ['id' => 6, 'age' => 25, 'name' => '6xiaoli'],);$ret = $collection->insertMany($data);# 返回插入idvar_dump($ret->getInsertedIds());

更新一条

$ret = $collection->updateOne(array('id' => 2), array('$set' => array('age' => 56)));

更新多条

$ret = $collection->updateMany(array('id' => ['$gt' => 1]), array('$set' => array('age' => 56, 'name' => 'x')));

删除一条

$ret = $collection->deleteOne(array('id' => 2));

删除多条

$collection = $client->selectCollection('test','test');0

聚合

$collection = $client->selectCollection('test','test');1