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=================================
MongoDB\\Client::selectDatabase()
=================================
.. default-domain:: mongodb
.. contents:: On this page
:local:
:backlinks: none
:depth: 1
:class: singlecol
Definition
----------
.. phpmethod:: MongoDB\\Client::selectDatabase($databaseName, $options)
Selects a database on the :program:`mongod` instance to which your
application is connected.
.. code-block:: php
function selectDatabase($databaseName array $options = []): MongoDB\Database
:phpmethod:`MongoDB\\Client::selectDatabase` has the following parameters:
.. include:: /includes/apiargs/MongoDBClient-method-selectDatabase-param.rst
The following table describes the options that
:phpmethod:`MongoDB\\Client::selectDatabase` can accept.
.. include:: /includes/apiargs/MongoDBClient-method-selectDatabase-option.rst
Output
------
Returns a :phpclass:`MongoDB\\Database` object.
Example
-------
The following example selects the ``demo`` database:
.. code-block:: php
<?php
$client = new MongoDB\Client;
$db = $client->selectDatabase('demo');
The following examples selects the ``demo`` database with a custom read
preference:
.. code-block:: php
<?php
$client = new MongoDB\Client;
$db = $client->selectDatabase(
'demo',
[
'readPreference' => new MongoDB\Driver\ReadPreference(MongoDB\Driver\ReadPreference::RP_SECONDARY),
]
);
.. seealso::
- :phpmethod:`Collection::__construct`
- :phpmethod:`MongoDB\\Client::__get`