The following snippet may be used under older versions of PHP to provide similar functionality. Tested only under Linux.
<?php
function _pcntl_setpriority($priority, $pid = 0)
{
$priority = (int)$priority;
$pid = (int)$pid;
if ($priority > 20 && $priority < -20) {
return False;
}
if ($pid == 0) {
$pid = getmypid();
}
return system("renice $priority -p $pid") != false;
}
?>
pcntl_setpriority
Description
bool pcntl_setpriority ( int priority [, int pid [, int process_identifier]] )pcntl_setpriority() sets the priority of pid to priority. If pid is not specified, the pid of the current process is used.
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.
process_identifier is one of PRIO_PGRP, PRIO_USER or PRIO_PROCESS.
如果成功则返回 TRUE，失败则返回 FALSE。
add a note
User Contributed Notes
leandro dot pereira at gmail dot com
23-Dec-2004 11:08
23-Dec-2004 11:08