libevent扩展
https://www.cnblogs.com/sailrancho/p/3835940.html
http://re2c.org/install/install.html
http://pecl.php.net/package/libevent
PHP 使用pcntl和libevent 实现Timer功能
https://www.jb51.net/article/42447.htm
pcntl扩展不能在windows环境安装
* 查看当前php版本
$ /opt/lampp/bin/php --versionPHP 7.2.8 (cli) (built: Jul 26 2018 15:17:41) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies
https://pan.baidu.com/s/1eo-EgtQAeKWu-UPCULFhUw
* 下载一个同样版本的php
https://pan.baidu.com/s/1gHcmukHSJvQMqTankGvG-A
wget http://cn2.php.net/distributions/php-7.2.8.tar.bz2* 解压php:
tar xvjf php-7.2.8.tar.bz2 -C .
* phpize
注意如果安装了多个版本的php 用哪个phpize
cd php-7.2.8/ext/pcntl
/opt/lampp/bin/phpize-7.2.8* php-config
注意php-config版本
./configure --with-php-config=/opt/lampp/bin/php-config-7.2.8* make && make install
make
sudo make installInstalling shared extensions: /opt/lampp/lib/php/extensions/no-debug-non-zts-20170718/
* php.ini 添加扩展
extension="pcntl.so"
或者写 extension="/opt/lampp/lib/php/extensions/no-debug-non-zts-20170718/pcntl.so"
* 重启xampp服务
$ sudo /opt/lampp/lampp restartRestarting XAMPP for Linux 7.2.8-0...
XAMPP: Stopping Apache...ok.
XAMPP: Stopping MySQL...ok.
XAMPP: Stopping ProFTPD...ok.
XAMPP: Starting Apache...ok.
XAMPP: Starting MySQL...ok.
XAMPP: Starting ProFTPD...ok.
如果服务启动失败 比如80端口被nginx占用， 443 https 端口可能也被占用
$ grep -rn "80" /opt/lampp/lampp
修改106行 端口号为8086
106: if testport 8086
修改113行443为1443
113: if test $ssl -eq 1 && testport 1443
** 同时修改httpd.conf
/opt/lampp/etc/httpd.conf
Listen 80 改为 Listen 8086
ServerName localhost 改为 ServerName localhost:8086
** 再修改 https的配置 httpd-ssl.conf
/opt/lampp/etc/extra/httpd-ssl.conf
Listen 443 改为 Listen 1443
* 查看phpinfo()，是否有pcntl扩展；
http://172.16.0.224:8086/dashboard/phpinfo.php
$ /opt/lampp/bin/php -m | grep pcntl
PHP Warning: Module 'pcntl' already loaded in Unknown on line 0
Warning: Module 'pcntl' already loaded in Unknown on line 0
pcntl
* 创建一个多进程的代码测试
cd ~/test/pcntl
emacs index.php
index.php
<?php
header('Content-Type: text/html; charset=UTF-8');
// 必须加载扩展
if (!function_exists("pcntl_fork")) {
die("pcntl extention is must !");
}
pcntl_signal(SIGCHLD, SIG_IGN); //如果父进程不关心子进程什么时候结束,子进程结束后，内核会回收。
$pid_dir = __dir__."/pid_files";
if (!file_exists($pid_dir)) {
mkdir($pid_dir, 0755, true);
}
for ($i = 0; $i < 3; $i++) {
$pid = pcntl_fork(); //创建子进程
if($pid == -1) {
//错误处理：创建子进程失败时返回-1.
var_dump("fork failed");
}
if ($pid === 0) {
// child
$pid = posix_getpid();
$ppid = posix_getppid();
$r = rand(0,100); //随机数
touch("$pid_dir/fork_child_process_{$i}_{$ppid}_{$pid}_{$r}");
exit;
} else {
// parent
// 如果不需要阻塞进程，而又想得到子进程的退出状态，则可以注释掉pcntl_wait($status)语句，或写成：
pcntl_wait($status, WNOHANG); //等待子进程中断，防止子进程成为僵尸进程。
}
}
$pid = posix_getpid();
$ppid = posix_getppid();
$r = rand(0,100); //随机数
touch("$pid_dir/fork_process_pid_{$ppid}_{$pid}_$r");
启动web服务测试:
$ /opt/lampp/bin/php -S 0.0.0.0:8088[Fri Sep 21 08:00:54 2018] PHP Warning: Module 'pcntl' already loaded in Unknown on line 0
<br />
<b>Warning</b>: Module 'pcntl' already loaded in <b>Unknown</b> on line <b>0</b><br />
PHP 7.2.8 Development Server started at Fri Sep 21 08:00:54 2018
Listening on http://0.0.0.0:8088
Document root is /home/ubuntu/test/pcntl
Press Ctrl-C to quit
浏览器访问 http://172.16.0.224:8088/
* pcntl 重复加载
[Fri Sep 21 08:00:54 2018] PHP Warning: Module 'pcntl' already loaded in Unknown on line 0
去掉php.ini中的
;; extension="pcntl.so"
;; extension="/opt/lampp/lib/php/extensions/no-debug-non-zts-20170718/pcntl.so"
重启服务
/opt/lampp/lampp restart
* 再创建一个测试文件 输出log
composer require monolog/monolog index.php
<?php
// composer require monolog/monolog
include './vendor/autoload.php';
use Monolog\Logger;
use Monolog\Handler\StreamHandler;
$log = new Logger('easy_tech');
$log->pushHandler( new StreamHandler(__DIR__.'/log/my.log', Logger::DEBUG) );
// 必须加载扩展
if (!function_exists("pcntl_fork")) {
die("pcntl extention is must !\n");
}
$logdir = __DIR__.'/log';
if (! file_exists($logdir)) {
mkdir($logdir, 0755, true);
}
// 如果父进程不关心子进程什么时候结束,子进程结束后，内核会回收。
pcntl_signal(SIGCHLD, SIG_IGN);
for ($i = 0; $i < 3; $i++) {
$pid = pcntl_fork(); //创建子进程
if($pid == -1) {
//错误处理：创建子进程失败时返回-1.
$log->error("fork failed");
}
if ($pid === 0) {
// child
$pid = posix_getpid();
$ppid = posix_getppid();
$r = rand(0, 100); //随机数
$log->debug("${ppid} forked child process {$pid} [{$r}]");
exit;
} else {
// parent
pcntl_wait($status, WNOHANG);
$log->debug("parent process waiting...");
}
}
$pid = posix_getpid();
$ppid = posix_getppid();
$r = rand(0,100); //随机数
$log->debug("{$ppid} fork process pid={$pid} rand=${r}");
/opt/lampp/bin/php index.php
$ cat ./log/my.log
[2018-09-21 10:37:25] easy_tech.DEBUG: parent process waiting... [] []
[2018-09-21 10:37:25] easy_tech.DEBUG: parent process waiting... [] []
[2018-09-21 10:37:25] easy_tech.DEBUG: parent process waiting... [] []
[2018-09-21 10:37:25] easy_tech.DEBUG: 1725 fork process pid=6345 rand=23 [] []
[2018-09-21 10:37:25] easy_tech.DEBUG: 6345 forked child process 6346 [89] [] []
[2018-09-21 10:37:25] easy_tech.DEBUG: 6345 forked child process 6347 [63] [] []
[2018-09-21 10:37:25] easy_tech.DEBUG: 6345 forked child process 6348 [77] [] []