LonghornPHP 2026

    The MongoDB\Driver\Monitoring\ServerChangedEvent class

    (mongodb >=1.13.0)

    Introduction

    The MongoDB\Driver\Monitoring\ServerChangedEvent class encapsulates information about a changed server description. For example, a server's type changing from secondary to primary would cause its server description to change.

    Class synopsis

    final class MongoDB\Driver\Monitoring\ServerChangedEvent {
    /* Properties */
    public readonly string $host;
    public readonly int $port;
    public readonly MongoDB\BSON\ObjectId $topologyId;
    public readonly MongoDB\Driver\ServerDescription $newDescription;
    public readonly MongoDB\Driver\ServerDescription $previousDescription;
    /* Methods */
    final public function getHost(): string
    final public function getNewDescription(): MongoDB\Driver\ServerDescription
    final public function getPort(): int
    final public function getPreviousDescription(): MongoDB\Driver\ServerDescription
    final public function getTopologyId(): MongoDB\BSON\ObjectId
    }

    Properties

    host

    The hostname of the server.

    port

    The port of the server.

    topologyId

    The topology ID.

    newDescription

    The new server description.

    previousDescription

    The previous server description.

    Changelog

    Version Description
    PECL mongodb 2.3.0 Added public readonly properties.

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