PHP Manual
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# proc_nice

(PHP 5)

proc_nice -- Change the priority of the current process

## 说明

bool proc_nice ( int increment )

proc_nice() changes the priority of the current process by the amount specified in increment. A positive increment will lower the priority of the current process, whereas a negative increment will raise the priority.

proc_nice() is not related to proc_open() and its associated functions in any way.

## 参数

increment

  The increment value of the priority change.

## 返回值

如果成功则返回 `TRUE`，失败则返回 `FALSE`。 If an error occurs, like the user lacks permission to change the priority, an error of level `E_WARNING` is also generated.

## 注释

> Availability: proc_nice() will only exist if your system has 'nice' capabilities. 'nice' conforms to: SVr4, SVID EXT, AT&T, X/OPEN, BSD 4.3. This means that proc_nice() is not available on Windows.

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