MongoDB\Driver
MongoDB\Driver\Manager::__construct
MongoDB\Driver
PHP Manual

# The MongoDB\Driver\Manager class

(mongodb >=1.0.0)

## Introduction

The MongoDB\Driver\Manager is the main entry point to the extension. It is responsible for maintaining connections to MongoDB (be it standalone server, replica set, or sharded cluster).

No connection to MongoDB is made upon instantiating the Manager. This means the MongoDB\Driver\Manager can always be constructed, even though one or more MongoDB servers are down.

Any write or query can throw connection exceptions as connections are created lazily. A MongoDB server may also become unavailable during the life time of the script. It is therefore important that all actions on the Manager to be wrapped in try/catch statements.

## Class synopsis

final MongoDB\Driver\Manager {
/* Methods */
final public __construct ( string `$uri` [, array `$options` [, array `$driverOptions` ]] )
final public MongoDB\Driver\WriteResult executeBulkWrite ( string `$namespace` , MongoDB\Driver\BulkWrite `$bulk` [, MongoDB\Driver\WriteConcern `$writeConcern` ] )
final public MongoDB\Driver\Cursor executeCommand ( string `$db` , MongoDB\Driver\Command `$command` [, MongoDB\Driver\ReadPreference `$readPreference` ] )
final public MongoDB\Driver\Cursor executeQuery ( string `$namespace` , MongoDB\Driver\Query `$query` [, MongoDB\Driver\ReadPreference `$readPreference` ] )
final public array getServers ( void )
final public MongoDB\Driver\Server selectServer ( MongoDB\Driver\ReadPreference `$readPreference` )
}

## Examples

Example #1 MongoDB\Driver\Manager::__construct() basic example

var_dump()ing a MongoDB\Driver\Manager will print out various details about the manager that are otherwise not normally expopsed. This can be useful to debug how the driver views your MongoDB setup, and which options are used.

`<?php
$manager = new MongoDB\Driver\Manager("mongodb://localhost:27017");
var_dump($manager);
?>`

The above example will output something similar to:

    object(MongoDB\Driver\Manager)#1 (3) {
      ["request_id"]=>
      int(1714636915)
      ["uri"]=>
      string(25) "mongodb://localhost:27017"
      ["cluster"]=>
      array(13) {
        ["mode"]=>
        string(6) "direct"
        ["state"]=>
        string(4) "born"
        ["request_id"]=>
        int(0)
        ["sockettimeoutms"]=>
        int(300000)
        ["last_reconnect"]=>
        int(0)
        ["uri"]=>
        string(25) "mongodb://localhost:27017"
        ["requires_auth"]=>
        int(0)
        ["nodes"]=>
        array(...)
        ["max_bson_size"]=>
        int(16777216)
        ["max_msg_size"]=>
        int(50331648)
        ["sec_latency_ms"]=>
        int(15)
        ["peers"]=>
        array(0) {
        }
        ["replSet"]=>
        NULL
      }
    }

## Table of Contents

- MongoDB\Driver\Manager::__construct — Create new MongoDB Manager
- MongoDB\Driver\Manager::executeBulkWrite — Execute one or more write operations
- MongoDB\Driver\Manager::executeCommand — Execute a database command
- MongoDB\Driver\Manager::executeQuery — Execute a database query
- MongoDB\Driver\Manager::getServers — Return the servers to which this manager is connected
- MongoDB\Driver\Manager::selectServer — Select a server matching a read preference

MongoDB\Driver
MongoDB\Driver\Manager::__construct
MongoDB\Driver
PHP Manual