How to implement multiple processes and close processes in php

php method to close a process: first create a PHP sample file; then close the specified process through the "exec("kill -9 30699");" method.

The operating environment of this article: Windows7 system, PHP7.1, Dell G3 computer.

1. PHP implements multi-process

PHP has a pcntl_fork function that can implement multi-process, but the pcntl extension needs to be loaded. And this extension can only be compiled under Linux.

First code:

<?php
$arr = [&#39;30000000&#39;,&#39;500000000&#39;,[&#39;7000000000&#39;,&#39;8000000&#39;]];
foreach($arr as $key=>$item){
    $pid[$key] = pcntl_fork();
    if ($pid[$key] == -1) {
        die('could not fork');
    } else if (!$pid[$key]) {
        if(is_array($item)){
            foreach($item as $k=>$value) {
                $pid[$k] = pcntl_fork();
                if(!$pid[$k]){
                    for($j=0;$j<$value;$j++){
                        $con1 = file_get_contents('./'.$value.'.txt');
                        file_put_contents('./'.$value.'.txt',$con1.'#'.$j);
                    }
                    exit;
                }
            }
        }else{
            for($i=0;$i<$item;$i++){
                $con = file_get_contents('./'.$item.'.txt');
                file_put_contents('./'.$item.'.txt',$con.'#'.$i);
            }
        }
        exit;
    }
}
把这个写在test.php文件里。
在Linux中执行： php -f  test.php
查询进程：ps -ef | gerp test     就会查到4个进程

Close the process: kill -9 pid [Recommended: "PHP Video tutorial》】

$pid[$k] = pcntl_fork();//这里的$pid[$k] 就是子进程的进程ID

<?php
exec("kill -9 30699");

写在test2.php 里在Linux中执行： php -f  test.php
查询进程就会发现  30699的进程被关闭了
参考url：https://zhidao.baidu.com/question/395877542327855005.html

注意：php实现多进程或关闭进程，都需要Linux用户的权限，如果是用web（浏览器上），那需要给web端执行的权限。我这里用root执行Linux语句，所以有权限。

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