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DOCSP-41957 - Mongo Client #106

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1 change: 1 addition & 0 deletions snooty.toml
Original file line number Diff line number Diff line change
Expand Up @@ -24,3 +24,4 @@ php-library = "MongoDB PHP Library"

[constants]
php-library = "MongoDB PHP Library"
driver-short = "PHP library"
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using "driver" so existing source constant references keep working. can rename all refs in a later PR if needed

110 changes: 110 additions & 0 deletions source/connect/client.txt
Original file line number Diff line number Diff line change
@@ -0,0 +1,110 @@
.. _php-client:

=======================
Create a MongoDB Client
=======================

.. facet::
:name: genre
:values: reference

.. meta::
:keywords: connection string, URI, server, Atlas, settings

.. contents:: On this page
:local:
:backlinks: none
:depth: 2
:class: singlecol

Overview
--------

To connect to a MongoDB deployment, you must create the following items:

- **Connection URI**, also known as a *connection string*, which tells the {+driver-short+}
which MongoDB deployment to connect to.
- **MongoDB\\Client** object, which creates the connection to the MongoDB deployment
and lets you perform operations on it.

You can also set options within either or both of these components to
customize the way that the {+driver-short+} behaves
while connected to MongoDB.

This guide describes the components of a connection string and shows how to
use a ``MongoDB\Client`` object to connect to a MongoDB deployment.

.. _php-connection-uri:

Connection URI
--------------

A standard connection string includes the following components:

.. list-table::
:widths: 20 80
:header-rows: 1

* - Component
- Description

* - ``mongodb://``

- Required. A prefix that identifies this as a string in the
standard connection format.

* - ``db_username:db_password``

- Optional. Authentication credentials. If you include these, the client
authenticates the user against the database specified in ``authSource``.
For more information about the ``authSource`` connection option, see
:ref:`php-auth`.
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broken for now


* - ``host[:port]``

- Required. The host and optional port number where MongoDB is running. If you don't
include the port number, the driver uses the default port, ``27017``.

* - ``/defaultauthdb``

- Optional. The authentication database to use if the
connection string includes ``db_username:db_password@``
authentication credentials but not the ``authSource`` option. If you don't include
this component, the client authenticates the user against the ``admin`` database.

* - ``?<options>``

- Optional. A query string that specifies connection-specific
options as ``<name>=<value>`` pairs. See
:ref:`php-connection-options` for a full description of
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broken for now

these options.

To learn more about connection strings, see
:manual:`Connection Strings </reference/connection-string>` in the
Server manual.

Create a MongoDB\Client
-----------------------

To create a connection to MongoDB, pass your connection string when constructing
an instance of the ``MongoDB\Client`` class.

In the following example, the library uses a sample connection URI to connect to a MongoDB
deployment on port ``27017`` of ``localhost``:

.. literalinclude:: /includes/connect/client.php
:language: php
:copyable: true

.. tip:: Reuse Your Client

Because each ``MongoDB\Client`` object represents a pool of connections to the
database, you can use a single instance of the class across multiple requests.
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To be checked by @jmikola @alcaeus, but I don't think there's a pool of connections, since requests are blocking and PHP is monothread.

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That is correct, PHP does not implement a connection pool. We have an article in the extension docs that details the connection persistence mechanism used by the PHP driver (current and the legacy one used before 1.2.0).


API Documentation
-----------------

To learn more about creating a ``MongoDB\Client`` object in the {+driver-short+},
see the following API documentation:

- :ref:`MongoDB\Client <php-api-mongodbclient>`
3 changes: 3 additions & 0 deletions source/includes/connect/client.php
Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
<?php

$client = new MongoDB\Client("mongodb://localhost:27017");
4 changes: 3 additions & 1 deletion source/reference/class/MongoDBClient.txt
Original file line number Diff line number Diff line change
@@ -1,3 +1,5 @@
.. _php-api-mongodbclient:

=====================
MongoDB\\Client Class
=====================
Expand Down Expand Up @@ -62,4 +64,4 @@ Methods
- :phpmethod:`MongoDB\Client::selectCollection()`
- :phpmethod:`MongoDB\Client::selectDatabase()`
- :phpmethod:`MongoDB\Client::startSession()`
- :phpmethod:`MongoDB\Client::watch()`
- :phpmethod:`MongoDB\Client::watch()`
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