public function getDuration()
	{
		$executed = $this->getExecuted();
		$finished = $this->getFinished();

		if (is_null($executed) || is_null($finished)) {
			return 0;
		}

		return strtotime($finished) - strtotime($executed);
	}
public function getDuration()
	{
		$executed = $this->getExecuted();
		$finished = $this->getFinished();

		if (is_null($executed) || is_null($finished)) {
			return 0;
		}

		return strtotime($finished) - strtotime($executed);
	}
Returns duration of the job's execution.

@return integer Time in seconds.
@todo Implement this!