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

成功时返回 TRUE，或者在失败时返回 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

Note: 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.