管理长时间运行的 php 脚本的最佳方法? [英] Best way to manage long-running php script?

问题描述

我有一个需要很长时间(5-30 分钟)才能完成的 PHP 脚本.以防万一，脚本正在使用 curl 从另一台服务器抓取数据.这就是它需要这么长时间的原因；它必须等待每个页面加载完毕，然后才能处理并移至下一个页面.

I have a PHP script that takes a long time (5-30 minutes) to complete. Just in case it matters, the script is using curl to scrape data from another server. This is the reason it's taking so long; it has to wait for each page to load before processing it and moving to the next.

我希望能够启动脚本并让它一直运行直到完成，这将在数据库表中设置一个标志.

I want to be able to initiate the script and let it be until it's done, which will set a flag in a database table.

我需要知道的是如何能够在脚本完成运行之前结束 http 请求.另外，php 脚本是最好的方法吗?

What I need to know is how to be able to end the http request before the script is finished running. Also, is a php script the best way to do this?

推荐答案

当然可以用 PHP 来完成，但是你不应该把它作为后台任务来做 - 新进程必须从它所在的进程组中分离出来启动.

Certainly it can be done with PHP, however you should NOT do this as a background task - the new process has to be dissocated from the process group where it is initiated.

由于人们一直对这个常见问题给出相同的错误答案，我在这里写了一个更完整的答案:

Since people keep giving the same wrong answer to this FAQ, I've written a fuller answer here:

http://symcbean.blogspot.com/2010/02/php-and-long-running-processes.html

来自评论:

简短的版本是 shell_exec('echo/usr/bin/php -q longThing.php | at now'); 但是原因为什么"，在这里包含的有点长.

The short version is shell_exec('echo /usr/bin/php -q longThing.php | at now'); but the reasons "why", are a bit long for inclusion here.

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