php简单操作mongodb

红太狼 2023-10-06 16:17 30阅读 0赞

mongodb管理器  
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*  Driver\\Manager 入口文件，一般都要先实例化该类
 *  Driver\\BulkWrite 读写类，数据库的增、删、改都要先靠该类来实现
 *  Driver\\Query 查询类，MongoDB支持丰富的查询方式，所以单独拿出来组建了一个类
 *  Driver\\Cursor 返回结果类，其实就是一个Cursor类的一个对象，该类有内置的toArray()函数可以结果转换成数组形式的
 *  BSON\\ObjectID MongoDB默认创建的索引是\_id，在添加的时候可以指定\_id，给类就是可以创建一个指定内容的\_id

## 一：插入数据 ##

例：向默认的test数据库的wj表中插入数据

$manager = new MongoDB\Driver\Manager("mongodb://localhost:27017");  
    
    // 插入数据
    $bulk = new MongoDB\Driver\BulkWrite;
    $bulk->insert(['id' => 1, 'name'=>'测试', 'url' => 'http://www.百度.com']);
    $manager->executeBulkWrite('test.wj', $bulk);

## 2：查询数据 ##

查询test数据库的wj表中name值不为测试的数据

$manager = new MongoDB\Driver\Manager("mongodb://localhost:27017");  
    $filter = ['name' => '测试'];
    $options = [
        'projection' => ['_id' => 0],
        'sort' => ['name' => -1],
    ];
    $query = new MongoDB\Driver\Query($filter, $options);
    $cursor = $manager->executeQuery('test.wj', $query);
    foreach ($cursor as $document) {
        
        print_r($document);
    }

## 3:更新数据 ##

将test数据库中的wj表中id为1的数据中name字段变为测试1234，

$bulk = new MongoDB\Driver\BulkWrite;
    $bulk->update(
        ['id' => 1],
        ['$set' => ['name' => '测试1234']],
        ['multi' => false, 'upsert' => false]  #multi表示只更新一条数据，upsert表示如果不存在update的记录，不进行插入操作
    );
    $manager = new MongoDB\Driver\Manager("mongodb://localhost:27017");  
    $writeConcern = new MongoDB\Driver\WriteConcern(MongoDB\Driver\WriteConcern::MAJORITY, 1000);
    $result = $manager->executeBulkWrite('test.wj', $bulk, $writeConcern);

## 4：删除数据 ##

$bulk = new MongoDB\Driver\BulkWrite;
    $bulk->delete(['id' => 1], ['limit' => 1]);   // limit 为 1 时，删除第一条匹配数据
    $bulk->delete(['id' => 2], ['limit' => 0]);   // limit 为 0 时，删除所有匹配数据
    $manager = new MongoDB\Driver\Manager("mongodb://localhost:27017");  
    $writeConcern = new MongoDB\Driver\WriteConcern(MongoDB\Driver\WriteConcern::MAJORITY, 1000);
    $result = $manager->executeBulkWrite('test.wj', $bulk, $writeConcern);

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