How to project data in MongoDB using PHP?

@dalton_moen 

To project data in MongoDB using PHP, you need to use the MongoDBDriverQuery class along with the MongoDBDriverManager class. Here are the steps:

1. Create a connection to the MongoDB server using the Manager class:

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$manager = new MongoDBDriverManager("mongodb://localhost:27017");

1. Create a Query object with the projection parameter:

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$query = new MongoDBDriverQuery(
    [], // criteria
    ['projection' => ['name' => 1, 'email' => 1]] // projection
);

In this example, we are projecting only the name and email fields.

1. Execute the query:

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$result = $manager->executeQuery('mydatabase.mycollection', $query);

Note that mydatabase and mycollection should be replaced with your own database and collection names.

1. Iterate through the result set and print the data:

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foreach ($result as $document) {
    echo $document->name . ': ' . $document->email . '';
}

This will print the name and email of each document in the result set.

Overall, projecting data in MongoDB using PHP is a straightforward process with the Query and Manager classes.