Get function name

# GearmanJob::functionName

(PECL gearman >= 0.5.0)

GearmanJob::functionName — Get function name

### 説明

public function GearmanJob::functionName(): false|string

Returns the function name for this job. This is the function the work will execute to perform the job.

### パラメータ

この関数にはパラメータはありません。

### 戻り値

The name of a function, or `false` if the job has not yet been initialized.

### 参考

- GearmanTask::function() - Get associated function name (deprecated)

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