php shell_exec在后台一次执行多个命令 [英] php shell_exec multiple commands at once in background

问题描述

我在php/linux中有问题，如下所述:

I have a problem in php/linux, described below:

我必须通过shell_exec(请执行cli命令订阅，请执行webspace-off)来执行linux命令.

I have to execute a linux command through shell_exec (plesk cli command subscription webspace-off).

问题是，当我从php执行此操作时，它可以工作，但是重新启动apache，导致空白页，而apache重新启动.

The problem is when i do this from php it works, but restarts apache, that resulting in a blank page, while apache restarts.

要摆脱这个问题，我必须在后台调用该shell_exec，并要延迟一段时间(预期结果:网页加载，并在4秒钟后运行linux脚本.)

To get rid of the problem i have to call that shell_exec in background, with a delay (Expected result: the web page loads, and after 4 sec. runs the linux script.)

我做了一些尝试，例如:

I have done some tryings like:

shell_exec("sleep 4 && /var/www/vhosts/site.com/httpdocs/wrapper2 3  --webspace-off ".$domain_name." &");

但是php将等待响应.

but php will wait for response.

以某种方式，我需要休眠linux命令的执行，而所有这些都必须在bg中运行. 不要等待回应.

Somehow i need to sleep the execution of a linux command , and all this has to run in bg., and dont wait for response.

谢谢

推荐答案

您应该尝试使用

You should try using exec rather than shell_exec, and redirect all output to /dev/null. Something like:

exec("(sleep 4 && ... --webspace-off ".$domain_name.") > /dev/null 2>&1 &");

(请注意命令周围的():您需要捕获sleep和包装器的输出流.)

(Note the () around the commands: you need to catch the output stream of both sleep and your wrapper.)

真实并确保您确认$domain_name.未经验证且使用

and make real sure that you validate $domain_name. Without validation and with

$domain_name = "; rm -rf ...";

您遇到了麻烦...

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