未加星标

分享PHP-pcntl 实现多进程代码

字体大小 | |
[开发(php) 所属分类 开发(php) | 发布者 店小二05 | 时间 | 作者 红领巾 ] 0人收藏点击收藏
php使用PCNTL系列的函数也能做到多进程处理一个事务。比如我需要从数据库中获取80w条的数据,再做一系列后续的处理,这个时候,用单进程?你可以等到明年今天了。。。所以应该使用pcntl函数了。

下面我们来看个实例

代码

<?php
$arChildId = array();
for($i = 0; $i < 10; $i++)
{
$iPid = pcntl_fork();
if($iPid == -1)
{
die('can\'t be forked.');
}
if($iPid)
{
# 主进程逻辑
$arChildId[] = $iPid;
}
else
{
# 子进程逻辑
$iPid = posix_getpid(); # 获取子进程的ID
$iSeconds = rand(5, 30);
echo '* Process '. $iPid. ' was created, and Executed, and Sleep '. $iSeconds. PHP_EOL;
excuteProcess($iPid, $iSeconds);
exit();
}
}
while(count($arChildId) > 0)
{
foreach($arChildId as $iKey=> $iPid)
{
$res = pcntl_waitpid($iPid, $status, WNOHANG);
if($res == -1 || $res > 0)
{
unset($arChildId[$iKey]);
echo '* Sub process: '. $iPid. ' exited with '. $status. PHP_EOL;
}
}
}
# 子进程执行的逻辑
function excuteProcess($iPid, $iSeconds)
{
file_put_contents('./log/'.$iPid.'.log', $iPid.PHP_EOL, FILE_APPEND);
sleep($iSeconds);
}
?>
运行结果

* Process 16163 was created, and Executed, and Sleep 11
* Process 16164 was created, and Executed, and Sleep 21
* Process 16165 was created, and Executed, and Sleep 24
* Process 16166 was created, and Executed, and Sleep 27
* Process 16167 was created, and Executed, and Sleep 8
* Process 16168 was created, and Executed, and Sleep 14
* Process 16169 was created, and Executed, and Sleep 14
* Process 16170 was created, and Executed, and Sleep 26
* Process 16171 was created, and Executed, and Sleep 20
* Process 16172 was created, and Executed, and Sleep 21
* Sub process: 16167 exited with 0
* Sub process: 16163 exited with 0
* Sub process: 16169 exited with 0
* Sub process: 16168 exited with 0
* Sub process: 16171 exited with 0
* Sub process: 16164 exited with 0
* Sub process: 16172 exited with 0
* Sub process: 16165 exited with 0
* Sub process: 16170 exited with 0
* Sub process: 16166 exited with 0

本文开发(php)相关术语:php代码审计工具 php开发工程师 移动开发者大会 移动互联网开发 web开发工程师 软件开发流程 软件开发工程师

主题: PHP数据数据库
分页:12
转载请注明
本文标题:分享PHP-pcntl 实现多进程代码
本站链接:http://www.codesec.net/view/484165.html
分享请点击:


1.凡CodeSecTeam转载的文章,均出自其它媒体或其他官网介绍,目的在于传递更多的信息,并不代表本站赞同其观点和其真实性负责;
2.转载的文章仅代表原创作者观点,与本站无关。其原创性以及文中陈述文字和内容未经本站证实,本站对该文以及其中全部或者部分内容、文字的真实性、完整性、及时性,不作出任何保证或承若;
3.如本站转载稿涉及版权等问题,请作者及时联系本站,我们会及时处理。
登录后可拥有收藏文章、关注作者等权限...
技术大类 技术大类 | 开发(php) | 评论(0) | 阅读(16)