(mongodb >=1.10.0)
MongoDB\Driver\Manager::addSubscriber — Registers a monitoring event subscriber with this Manager
$subscriber): voidRegisters a monitoring event subscriber with this Manager. The subscriber will be notified of all events for this Manager.
注意: If
subscriberis already registered with this Manager, this function is a no-op. Ifsubscriberis also registered globally, it will still only be notified once of each event for this Manager.
subscriber (MongoDB\Driver\Monitoring\Subscriber)A monitoring event subscriber to register with this Manager.
没有返回值。
subscriber is a
MongoDB\Driver\Monitoring\LogSubscriber, since
loggers can only be registered globally.