MongoDB\Driver\Monitoring\addSubscriber Registers a monitoring event subscriber globally &reftitle.description; voidMongoDB\Driver\Monitoring\addSubscriber MongoDB\Driver\Monitoring\Subscribersubscriber Registers a monitoring event subscriber globally. The subscriber will be notified of all events in the driver for any Manager. If subscriber is already registered globally, this function is a no-op. If subscriber is also registered with one or more Managers, it will still only be notified once of each event for each Manager. &reftitle.parameters; subscriber (MongoDB\Driver\Monitoring\Subscriber) A monitoring event subscriber to register globally. &reftitle.returnvalues; &return.void; &reftitle.errors; &mongodb.throws.argumentparsing; &reftitle.seealso; MongoDB\Driver\Monitoring\removeSubscriber MongoDB\Driver\Monitoring\Subscriber MongoDB\Driver\Monitoring\CommandSubscriber MongoDB\Driver\Manager::addSubscriber