如何使用PHP在MongoDB中实现数据的批量导入和导出

<?php
//连接到MongoDB
$mongo = new MongoDBDriverManager("mongodb://localhost:27017");

//要插入的数据
$data = [
    ["name" => "Alice", "age" => 20, "email" => "alice@example.com"],
    ["name" => "Bob", "age" => 25, "email" => "bob@example.com"],
    ["name" => "Charlie", "age" => 30, "email" => "charlie@example.com"]
];

//要插入的集合
$collection = 'users';

//构建批量插入的命令
$bulk = new MongoDBDriverBulkWrite;
foreach($data as $document){
    $bulk->insert($document);
}

//执行批量插入
$mongo->executeBulkWrite('database.'.$collection, $bulk);

//输出插入成功的提示信息
echo "数据批量插入成功！";
?>

<?php
//连接到MongoDB
$mongo = new MongoDBDriverManager("mongodb://localhost:27017");

//查询条件
$query = new MongoDBDriverQuery([]);

//要查询的集合
$collection = 'users';

//执行查询
$rows = $mongo->executeQuery('database.'.$collection, $query);

//遍历查询结果
$data = [];
foreach($rows as $row){
    $data[] = (array)$row;
}

//输出导出的数据
print_r($data);
?>

<?php
//连接到MongoDB
$mongo = new MongoDBDriverManager("mongodb://localhost:27017");

//查询条件
$query = new MongoDBDriverQuery([]);

//要查询的集合
$collection = 'users';

//执行查询
$rows = $mongo->executeQuery('database.'.$collection, $query);

//打开CSV文件
$file = fopen('export.csv', 'w');

//写入CSV文件头部信息
fputcsv($file, array_keys((array)$rows->current()), ',');

//将查询结果写入CSV文件
foreach($rows as $row){
    fputcsv($file, (array)$row, ',');
}

//关闭CSV文件
fclose($file);

//输出CSV文件导出成功的提示信息
echo "CSV文件导出成功！";
?>