Returns the heartbeat's duration in microseconds

# MongoDB\Driver\Monitoring\ServerHeartbeatFailedEvent::getDurationMicros

(mongodb >=1.13.0)

MongoDB\Driver\Monitoring\ServerHeartbeatFailedEvent::getDurationMicros — Returns the heartbeat's duration in microseconds

### Description

final public MongoDB\Driver\Monitoring\ServerHeartbeatFailedEvent::getDurationMicros(): int

The heartbeat's duration is a calculated value that includes the time to send the message and receive the reply from the server.

### Parameters

This function has no parameters.

### Return Values

Returns the heartbeat's duration in microseconds.

### Errors/Exceptions

- Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.

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