php5.5 安装pcntl扩展
http://php.net/releases/
wget http://cn2.php.net/distributions/php-5.5.9.tar.bz2
tar xvf php-5.5.9.tar.bz2 -C .
cd ./php-5.5.9/ext/pcntl
/usr/bin/phpize5
./configure --with-php-config=/usr/bin/php-config5
make
sudo make install
ls /usr/lib/php5/20121212/
# sudo echo "extension=pcntl.so" >> /etc/php5/cli/php.ini
# sudo echo "extension=pcntl.so" >> /etc/php5/fpm/php.ini
php -m | grep pcntl# php.ini 注释掉这行
disable_functions = pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wexitstatus,pcntl_wtermsig,pcntl\
_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getp\
riority,pcntl_setpriority,
----------------------------------------------------------------------
Libraries have been installed in:
/home/ubuntu/code/php/php-5.5.9/ext/pcntl/modules
If you ever happen to want to link against installed libraries
in a given directory, LIBDIR, you must either use libtool, and
specify the full pathname of the library, or use the `-LLIBDIR'
flag during linking and do at least one of the following:
- add LIBDIR to the `LD_LIBRARY_PATH' environment variable
during execution
- add LIBDIR to the `LD_RUN_PATH' environment variable
during linking
- use the `-Wl,-rpath -Wl,LIBDIR' linker flag
- have your system administrator add LIBDIR to `/etc/ld.so.conf'
See any operating system documentation about shared libraries for
more information, such as the ld(1) and ld.so(8) manual pages.
----------------------------------------------------------------------
PHP模拟并发
https://blog.csdn.net/zhang_xinglong/article/details/16339867
测试程序
----------------------------------------------------
* pcntl.php
<?php
$b = function_exists("pcntl_fork");
var_dump($b);
declare(ticks=1);
//是否等待进程结束
$bWaitFlag = true;
//进程总数
$intNum = 10;
//进程PID数组
$pids = array();
echo "BEGIN\n";
for($i = 0; $i < $intNum; $i++) {
//产生子进程，而且从当前行之下开试运行代码，而且不继承父进程的数据信息
$pids[$i] = pcntl_fork();
if( 0 === $pids[$i]) {
//子进程进程代码段_Start
$str = "";
sleep($i);
for ($j = 0; $j < $i; $j++) {
$str .= "*";
}
echo "$i -> " . date('Y-m-d H:i:s', time()) . " $str \n";
exit();
//子进程进程代码段_End
} else if (0 < $pids[$i]) {
echo 'pid='.$pids[$i].PHP_EOL;
}
}
if ($bWaitFlag) {
for($i = 0; $i < $intNum; $i++) {
pcntl_waitpid($pids[$i], $status, WUNTRACED);
echo "wait $i(".$pids[$i].") -> " . date('Y-m-d H:i:s', time()) . "\n";
}
}
echo ("END\n");
* test:
ubuntu@et-dev-mingzhanghui:~/code/test$ php pcntl.php
bool(true)
BEGIN
pid=5850
pid=5851
pid=5852
pid=5853
pid=5854
pid=5855
pid=5856
pid=5857
pid=5858
0 -> 2019-02-15 03:45:04
pid=5859
wait 0(5850) -> 2019-02-15 03:45:04
1 -> 2019-02-15 03:45:05 *
wait 1(5851) -> 2019-02-15 03:45:05
2 -> 2019-02-15 03:45:06 **
wait 2(5852) -> 2019-02-15 03:45:06
3 -> 2019-02-15 03:45:07 ***
wait 3(5853) -> 2019-02-15 03:45:07
4 -> 2019-02-15 03:45:08 ****
wait 4(5854) -> 2019-02-15 03:45:08
5 -> 2019-02-15 03:45:09 *****
wait 5(5855) -> 2019-02-15 03:45:09
6 -> 2019-02-15 03:45:10 ******
wait 6(5856) -> 2019-02-15 03:45:10
7 -> 2019-02-15 03:45:11 *******
wait 7(5857) -> 2019-02-15 03:45:11
8 -> 2019-02-15 03:45:12 ********
wait 8(5858) -> 2019-02-15 03:45:12
9 -> 2019-02-15 03:45:13 *********
wait 9(5859) -> 2019-02-15 03:45:13
END
