pcntl_setpriority

    (PHP 5, PHP 7, PHP 8)

    pcntl_setpriority — Change the priority of any process

    Description

    pcntl_setpriority(int$priority, ?int$process_id = null, int$mode = PRIO_PROCESS): bool

    pcntl_setpriority() sets the priority of process_id.

    Parameters

    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.

    Return Values

    Returns true on success or false on failure.

    Changelog

    VersionDescription
    8.0.0process_id is nullable now.

    See Also

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