GearmanTask::isKnown (PECL gearman >= 0.5.0)GearmanTask::isKnown — Determine if task is known 说明 public GearmanTask::isKnown(): bool Gets the status information for whether or not this task is known to the job server. 参数 此函数没有参数。 返回值 true if the task is known, false otherwise.