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pcntl_setpriority

(PHP 5)

pcntl_setpriority -- Change the priority of any process

说明

bool pcntl_setpriority ( int priority [, int pid [, int process_identifier]] )

pcntl_setpriority() sets the priority of pid.

参数

priority

priority is generally a value in the range -20 to 20. The default priority is 0 while a lower numerical value causes more favorable scheduling. Because priority levels can differ between system types and kernel versions, please see your system's setpriority(2) man page for specific details.

pid

If not specified, the pid of the current process is used.

process_identifier

One of PRIO_PGRP, PRIO_USER or PRIO_PROCESS.

返回值

如果成功则返回 TRUE，失败则返回 FALSE。

参见

pcntl_getpriority()

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