DevTut

# Using MongoDB

# Connect to MongoDB

Create a MongoDB connection, that later you can query:

$manager = new \MongoDB\Driver\Manager('mongodb://localhost:27017');

In the next example, you will learn how to query the connection object.

This extension close the connection automatically, it's not necessary to close manually.

# Get multiple documents - find()

Example for searching multiple users with the name "Mike":

$filter = ['name' => 'Mike'];
$query = new \MongoDB\Driver\Query($filter);

$cursor = $manager->executeQuery('database_name.collection_name', $query);
foreach ($cursor as $doc) {
    var_dump($doc);
}

# Get one document - findOne()

Example for searching just one user with a specific id, you should do:

$options = ['limit' => 1];
$filter = ['_id' => new \MongoDB\BSON\ObjectID('578ff7c3648c940e008b457a')];
$query = new \MongoDB\Driver\Query($filter, $options);

$cursor = $manager->executeQuery('database_name.collection_name', $query);
$cursorArray = $cursor->toArray();
if(isset($cursorArray[0])) {
    var_dump($cursorArray[0]);
}

# Insert document

Example for adding a document:

$document = [
    'name' => 'John',
    'active' => true,
    'info' => ['genre' => 'male', 'age' => 30]
];
$bulk = new \MongoDB\Driver\BulkWrite;
$_id1 = $bulk->insert($document);
$result = $manager->executeBulkWrite('database_name.collection_name', $bulk);

# Update a document

Example for updating all documents where name is equal to "John":

$filter = ['name' => 'John'];
$document = ['name' => 'Mike'];

$bulk = new \MongoDB\Driver\BulkWrite;
$bulk->update(
    $filter,
    $document,
    ['multi' => true]
);
$result = $manager->executeBulkWrite('database_name.collection_name', $bulk);

# Delete a document

Example for deleting all documents where name is equal to "Peter":

$bulk = new \MongoDB\Driver\BulkWrite;

$filter = ['name' => 'Peter'];
$bulk->delete($filter);

$result = $manager->executeBulkWrite('database_name.collection_name', $bulk);

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