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Fetching data with MongoDB comes down to working with three different classes, MongoDBDriverManager, MongoDBDriverQuery, and MongoDBDriverReadPreference:

<?phprequire_once __DIR__ . '/vendor/autoload.php';try {    $manager = new MongoDBDriverManager('mongodb://localhost:27017');    /* Select only the matching documents */    $filter = [        'price' => [            '$gte' => 619.99,        ],    ];    $queryOptions = [        /* Return only the following fields in the matching documents */        'projection' => [            'name' => 1,            'price' => 1,        ],        /* Return the documents in descending order of price */        'sort' => [            'price' => -1        ]    ];    $query = new MongoDBDriverQuery($filter, $queryOptions);    $readPreference = new MongoDBDriverReadPreference(MongoDBDriverReadPreference::RP_PRIMARY);