并行执行多个PHP脚本，并在完成时收到通知 [英] Executing multiple PHP scripts in parallel, and being notified when finished

问题描述

所以，这就是我想要做的-实际上，这很不言自明:

So, that's what I'm trying to do - pretty self-explanatory actually :

• 启动X个同时"进程(每个进程都绑定到不同的php脚本)
• 能够说出所有完成的时间

• Initiate X 'simultaneous' processes (each bound to a different php script)
• Be able to say when all of them are finished

我研究了各种不同的方法，并且可能要使用exec和后台进程. (沿着这些行的内容).

I've had a look at various different approaches, and I'm probably going to use exec and background processes. (Something along these lines).

我真的无法理解的事情是:

The thing - which I really can't get my head around - is :

我不知道这是检查所有流程是否已完成的最有效方法 (能够关注总体进度-例如，X中的X Y完成，也是必须的).

重要的是时间效率，并且-显然-不会引起任何不必要的服务器过载(因此，我假设对实时" pid进行任何冻结" while循环检查，即使是间隔执行一次，也是如此)问题，对吧?)

What is important is time-efficiency, and - obviously - not causing any unnecessary server overload (so, I suppose any 'frozen' while loop checking for live pids, even if at intervals, is out of the question, right?)

非常欢迎任何建议！

PS:最初，我已经从客户端开始通过异步Ajax请求对整个过程进行了设置，但是我目前正在考虑迁移至完全非JavaScript的环境，服务器端环境.并行处理的问题仍然存在...

P.S.: I've initially set this whole thing up with asynchronous Ajax requests starting from the client-side, but I'm currently considering a migration to a non-javascript fully-server-side environment. The issue with parallel-processing though remains...

推荐答案

您应该研究pcntl_fork和相关功能.这样一来，一个主进程可以形成多个子进程，并通知子退出状态.

You should investigate the pcntl_fork and related functions. This allows one master process to form a number of child processes and be notified of child exit status.

http://php.net/manual/en/function.pcntl- fork.php

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