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MongoDB\Database::__construct()

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Definition

MongoDB\Database::__construct

Constructs a new Database instance.

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function __construct(MongoDB\Driver\Manager $manager, $databaseName, array $options = [])

This constructor has the following parameters:

Parameter Type Description
$manager MongoDB\Driver\Manager The Manager instance from the driver. The manager maintains connections between the driver and your MongoDB instances.
$databaseName string The name of the database.
$options array Optional. An array specifying the desired options.

The $options parameter supports the following options:

Option Type Description
readConcern MongoDB\Driver\ReadConcern Optional. The default read concern to use for database operations. Defaults to the manager’s read concern.
readPreference MongoDB\Driver\ReadPreference Optional. The default read preference to use for database operations. Defaults to the manager’s read preference.
typeMap array

Optional. Default type map to apply to cursors, which determines how BSON documents are converted to PHP values. The MongoDB PHP Library uses the following type map by default:

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[
    'array' => 'MongoDB\Model\BSONArray',
    'document' => 'MongoDB\Model\BSONDocument',
    'root' => 'MongoDB\Model\BSONDocument',
]
writeConcern MongoDB\Driver\WriteConcern Optional. The default write concern to use for database operations. Defaults to the manager’s write concern.

Errors/Exceptions

MongoDB\Exception\InvalidArgumentException for errors related to the parsing of parameters or options.

Behavior

If you construct a Database explicitly, the Database inherits any options from the MongoDB\Driver\Manager object. If you select the Database from a Client object, the Database inherits its options from that object.

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