Returns an array of information describing this server

# MongoDB\Driver\Server::getInfo

(mongodb >=1.0.0)

MongoDB\Driver\Server::getInfo — Returns an array of information describing this server

### Description

final public MongoDB\Driver\Server::getInfo(): array

Returns an array of information describing the server. This array is derived from the most recent » hello command response obtained through » server monitoring.

> Note:

> When the driver is connected to a load balancer, this method will return the backing server's » hello command response from the initial connection handshake. This is in contrast to other methods (e.g. MongoDB\Driver\Server::getType()), which will return information about the load balancer itself.

### Parameters

This function has no parameters.

### Return Values

Returns an array of information describing this server.

### Errors/Exceptions

- Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.

### Examples

Example #1 MongoDB\Driver\Server::getInfo() example

`<?php
$manager = new MongoDB\Driver\Manager('mongodb://localhost:27017/');
$rp = new MongoDB\Driver\ReadPreference('primary');
$server = $manager->selectServer($rp);
var_dump($server->getInfo());
?>`

The above example will output something similar to:

    array(23) {
      ["helloOk"]=>
      bool(true)
      ["topologyVersion"]=>
      array(2) {
        ["processId"]=>
        object(MongoDB\BSON\ObjectId)#4 (1) {
          ["oid"]=>
          string(24) "617b6d696a3a89d2f77e6df0"
        }
        ["counter"]=>
        int(6)
      }
      ["hosts"]=>
      array(1) {
        [0]=>
        string(15) "localhost:27017"
      }
      ["setName"]=>
      string(3) "rs0"
      ["setVersion"]=>
      int(1)
      ["ismaster"]=>
      bool(true)
      ["secondary"]=>
      bool(false)
      ["primary"]=>
      string(15) "localhost:27017"
      ["me"]=>
      string(15) "localhost:27017"
      ["electionId"]=>
      object(MongoDB\BSON\ObjectId)#5 (1) {
        ["oid"]=>
        string(24) "7fffffff0000000000000001"
      }
      ["lastWrite"]=>
      array(4) {
        ["opTime"]=>
        array(2) {
          ["ts"]=>
          object(MongoDB\BSON\Timestamp)#6 (2) {
            ["increment"]=>
            string(1) "1"
            ["timestamp"]=>
            string(10) "1635478989"
          }
          ["t"]=>
          int(1)
        }
        ["lastWriteDate"]=>
        object(MongoDB\BSON\UTCDateTime)#7 (1) {
          ["milliseconds"]=>
          string(13) "1635478989000"
        }
        ["majorityOpTime"]=>
        array(2) {
          ["ts"]=>
          object(MongoDB\BSON\Timestamp)#8 (2) {
            ["increment"]=>
            string(1) "1"
            ["timestamp"]=>
            string(10) "1635478989"
          }
          ["t"]=>
          int(1)
        }
        ["majorityWriteDate"]=>
        object(MongoDB\BSON\UTCDateTime)#9 (1) {
          ["milliseconds"]=>
          string(13) "1635478989000"
        }
      }
      ["maxBsonObjectSize"]=>
      int(16777216)
      ["maxMessageSizeBytes"]=>
      int(48000000)
      ["maxWriteBatchSize"]=>
      int(100000)
      ["localTime"]=>
      object(MongoDB\BSON\UTCDateTime)#10 (1) {
        ["milliseconds"]=>
        string(13) "1635478992136"
      }
      ["logicalSessionTimeoutMinutes"]=>
      int(30)
      ["connectionId"]=>
      int(3)
      ["minWireVersion"]=>
      int(0)
      ["maxWireVersion"]=>
      int(13)
      ["readOnly"]=>
      bool(false)
      ["ok"]=>
      float(1)
      ["$clusterTime"]=>
      array(2) {
        ["clusterTime"]=>
        object(MongoDB\BSON\Timestamp)#11 (2) {
          ["increment"]=>
          string(1) "1"
          ["timestamp"]=>
          string(10) "1635478989"
        }
        ["signature"]=>
        array(2) {
          ["hash"]=>
          object(MongoDB\BSON\Binary)#12 (2) {
            ["data"]=>
            string(20) ""
            ["type"]=>
            int(0)
          }
          ["keyId"]=>
          int(0)
        }
      }
      ["operationTime"]=>
      object(MongoDB\BSON\Timestamp)#13 (2) {
        ["increment"]=>
        string(1) "1"
        ["timestamp"]=>
        string(10) "1635478989"
      }
    }

### Changelog

Version | Description
--- | ---
PECL mongodb 1.11.0 | When the driver is connected to a load balancer, this method returns the backing server's `hello` command response from the initial connection handshake.

### See Also

- MongoDB\Driver\ServerDescription::getHelloResponse() - Returns the server's most recent "hello" response
- » hello command in the MongoDB manual
- » Server Discovery and Monitoring Specification

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