(PHP 5, PHP 7, PHP 8)
pcntl_setpriority — Change the priority of any process
pcntl_setpriority(int $priority, ?int $process_id = null, int $mode = PRIO_PROCESS): bool
pcntl_setpriority() sets the priority of process_id.
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.
process_id If null, the process id of the current process is used.
mode One of PRIO_PGRP, PRIO_USER, PRIO_PROCESS, PRIO_DARWIN_BG or PRIO_DARWIN_THREAD.
| Version | Description |
|---|---|
| 8.0.0 | process_id is nullable now. |
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https://www.php.net/manual/en/function.pcntl-setpriority.php