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===================================
MongoDB\\Client::selectCollection()
===================================
.. default-domain:: mongodb
.. contents:: On this page
:local:
:backlinks: none
:depth: 1
:class: singlecol
Definition
----------
.. phpmethod:: MongoDB\\Client::selectCollection()
Selects a collection on the server.
.. code-block:: php
function selectCollection($databaseName, $collectionName, array $options = []): MongoDB\Collection
This method has the following parameters:
.. include:: /includes/apiargs/MongoDBClient-method-selectCollection-param.rst
The ``$options`` parameter supports the following options:
.. include:: /includes/apiargs/MongoDBClient-method-selectCollection-option.rst
Return Values
-------------
A :phpclass:`MongoDB\\Collection` object.
Errors/Exceptions
-----------------
.. include:: /includes/extracts/error-invalidargumentexception.rst
Behavior
--------
The selected collection inherits options such as read preference and type
mapping from the :phpclass:`Client <MongoDB\\Client>` object. Options may be
overridden via the ``$options`` parameter.
Example
-------
The following example selects the ``users`` collection in the ``test`` database:
.. code-block:: php
<?php
$client = new MongoDB\Client;
$collection = $client->selectCollection('test', 'users');
The following example selects the ``users`` collection in the ``test`` database
with a custom read preference:
.. code-block:: php
<?php
$client = new MongoDB\Client;
$collection = $client->selectCollection(
'test',
'users',
[
'readPreference' => new MongoDB\Driver\ReadPreference(MongoDB\Driver\ReadPreference::RP_SECONDARY),
]
);
See Also
--------
- :phpmethod:`MongoDB\\Collection::__construct()`
- :phpmethod:`MongoDB\\Database::selectCollection()`