分享一個很有用的php7+mongodb類！

由於專案需要，把專案升級到了php7。但是升級了之後發現mongo擴充套件不能用了。php7.0以上只支援mongodb擴充套件了。而mongodb擴充套件的驅動使用起來比monmgo擴充套件顯得很複雜，囉嗦。在網上找了很久。終於找到了一個比較簡潔的mongodb類。語法跟mongo的差不多。清晰，自然。

專案地址https://github.com/mongodb/mongo-php-library

因為專案是國外友人貢獻的。所以沒有可以看的很明白的檔案。這裡整理了一些常用的方法。

獲取範例

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

獲取集合

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

獲取一條資料

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

獲取多條資料

$where = ['type'=>1];
$options = array(
    'projection' => array('id' => 1, 'age' => 1, 'name' => -1), // 指定返回哪些欄位 1 表示返回 -1 表示不返回
    'sort' => array('id' => -1), // 指定排序欄位
    'limit' => 10, // 指定返回的條數
    '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);

插入一條資料

$data = array(
    'id' => 2,
    'age' => 20,
    'name' => '張三'
);
$ret = $collection->insertOne($data);
$id=$ret->getInsertedId();

批次插入

$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id
var_dump($ret->getInsertedIds());

更新一條

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

更新多條

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

刪除一條

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

刪除多條

$collection->deleteMany(array('id' => array('$in' => array(1, 2))));

聚合

$ops = [
    [
        '$match' =>['type'=>['$in'=>[2,4]]]
    ],
    [
        '$sort' => ['list.create_time' => -1]  //sort順序不能變，否則會造成排序混亂，注意先排序再分頁
    ],
    [
        '$skip' => 0
    ],
    [
        '$limit' => 20000
    ],
];
$data = $collection->aggregate($ops);
foreach ($data as $document)
{
    var_dump($document);
}