Run a single low priority task

# GearmanClient::doLow

(PECL gearman >= 0.5.0)

GearmanClient::doLow — Run a single low priority task

### 说明

public function GearmanClient::doLow(string `$function`, string `$workload`, ?string `$unique` = `null`): string

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.

### 参数

`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。

### 返回值

A string representing the results of running a task.

### 参见

- GearmanClient::doNormal() - Run a single task and return a result
- GearmanClient::doHigh() - Run a single high priority task
- GearmanClient::doBackground() - Run a task in the background
- GearmanClient::doHighBackground() - Run a high priority task in the background
- GearmanClient::doLowBackground() - Run a low priority task in the background

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