(mongodb >=1.3.0)
MongoDB\Driver\Monitoring\addSubscriber — Registers a new monitoring event subscriber
$subscriber
) : voidRegisters a new monitoring event subscriber with the driver. Registered subscribers will be notified of monitoring events through specific methods.
Note: If the object is already registered, this function is a no-op.
subscriber
(MongoDB\Driver\Monitoring\Subscriber)A monitoring event subscriber object to register.
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