(PECL gearman <= 0.5.0)
GearmanJob::fail — Send fail status (deprecated)
Sends failure status for this job, indicating that the job failed in a known way (as opposed to failing due to a thrown exception).
Note:
This method has been replaced by GearmanJob::sendFail() in the 0.6.0 release of the Gearman extension.
此函数没有参数。
成功时返回 true， 或者在失败时返回 false。