MongoDB和PHPLib从游标中检索嵌入的文档

Question

我有以下代码：

<?php
require __DIR__ . '/vendor/autoload.php';
$client = new MongoDBClient("mongodb://localhost:27017");
$collection = $client->bbcData->programmeData;
$result = $collection->find( [ '_id' => 'b007jwd9'] );
foreach ($result as $entry) {
    echo $entry['_id'], ': ', $entry['complete_title'], "n";
}
?>

JSON 如下所示：

{"complete_title":{"name":"wimsey - murder must advertise","episode":"sudden decease of a man in dress clothes"},"media_type":"audio","_id":"b007jwd9","categories":{"category1":["drama", "crime"]}}

我想打印出complete_title的名称，但是文档没有显示语法。目前我收到一个错误，说complete_title是BSONDocument，因此无法将其转换为字符串。

Answer 1

使用 iterator_to_array 获取数组。

foreach ($result as $entry) {
    $array = iterator_to_array($entry['complete_title']);
    echo $entry['_id'], ': ', $array['name'], "n";
}