(PECL gearman >= 0.5.0)
GearmanClient::doLow — Run a single low priority task
Runs a single low priority task and returns a string representation of the result. It is up to the GearmanClient and GearmanWorker to agree on the format of the result. Normal and high priority tasks will get precedence over low priority tasks in the job queue.
function由程序自动执行的已注册函数。
workload被处理的序列化数据。
unique用于标识特定任务的唯一性 ID。
A string representing the results of running a task.