(mongodb >=1.13.0)
MongoDB\Driver\Monitoring\SDAMSubscriber::topologyOpening — Notification method for opening the topology
$event): voidIf the subscriber has been registered, the driver will call this method when the topology is opened.
event (MongoDB\Driver\Monitoring\TopologyOpeningEvent)An event object encapsulating information about the opened topology.
沒(méi)有返回值。