pcntl_strerror

(PHP 5 >= 5.3.4, PHP 7, PHP 8)

pcntl_strerror — Retrieve the system error message associated with the given errno

说明

pcntl_strerror(int $error_code): string

Returns the system error message associated with the given error_code (errno) of the last pcntl function that failed. The error_code parameter may be obtained by calling pcntl_get_last_error().

参数

error_code: An error number (errno), returned by pcntl_get_last_error().

返回值

Returns the error message, as a string.

示例

示例 #1 pcntl_strerror() example

This example will attempt to wait on child processes in a situation where no child process exists, then will print out the corresponding error message.

<?php
$pid = pcntl_wait($status);
if ($pid === -1) {
$errno = pcntl_get_last_error();
$message = pcntl_strerror($errno);
fwrite(STDERR, 'pcntl_wait failed with errno ' . $errno
. ': ' . $message . PHP_EOL);
}

以上示例的输出类似于：

pcntl_wait failed with errno 10: No child processes

参见

pcntl_get_last_error() - Retrieve the error number set by the last pcntl function which failed

发现了问题？

了解如何改进此页面 • 提交拉取请求 • 报告一个错误

＋添加备注

用户贡献的备注

此页面尚无用户贡献的备注。

备份地址：http://www.lvesu.com/blog/php/function.pcntl-strerror.php