php7的mongodb基本用法（代码详解）

以下是PHP7中使用MongoDB的基本用法代码详解：

1. 连接到MongoDB数据库：

$mongoClient = new MongoDB\Driver\Manager("mongodb://localhost:27017");

2. 插入文档：

$bulk = new MongoDB\Driver\BulkWrite;
$document = ['name' => 'John', 'age' => 30, 'email' => 'john@example.com'];
$bulk->insert($document);
$mongoClient->executeBulkWrite('database.collection', $bulk);

3. 查询文档：

$filter = ['name' => 'John'];
$options = [];
$query = new MongoDB\Driver\Query($filter, $options);
$cursor = $mongoClient->executeQuery('database.collection', $query);

foreach ($cursor as $document) {
    echo $document->name . "\n";
}

4. 更新文档：

$filter = ['name' => 'John'];
$update = ['$set' => ['age' => 35]];
$options = ['multi' => false, 'upsert' => false];
$bulk = new MongoDB\Driver\BulkWrite;
$bulk->update($filter, $update, $options);
$mongoClient->executeBulkWrite('database.collection', $bulk);

5. 删除文档：

$filter = ['name' => 'John'];
$options = ['limit' => 1];
$bulk = new MongoDB\Driver\BulkWrite;
$bulk->delete($filter, $options);
$mongoClient->executeBulkWrite('database.collection', $bulk);

这些是PHP7中使用MongoDB的基本用法。可以根据需要进行适当的修改和扩展。