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# pcntl_getpriority

(PHP 5)

pcntl_getpriority -- Get the priority of any process

## Description

int pcntl_getpriority ( [int pid [, int process_identifier]] )

pcntl_getpriority() gets the priority of pid. If pid is not specified, the pid of the current process is used. Because priority levels can differ between system types and kernel versions, please see your system's getpriority(2) man page for specific details.

pcntl_getpriority() returns the priority of the process or `FALSE` on error. A lower numerical value causes more favorable scheduling.

process_identifier is one of `PRIO_PGRP`, `PRIO_USER` or `PRIO_PROCESS`.

警告
這個函數可能回傳布林值 `FALSE`，但也可能回傳一個同於 `FALSE` 的非布林值，像是0或 ""請參考Booleans此節有更多資訊。使用 === 運算子來測試這個函數的回傳值。

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