PHP 中的异步 shell exec
我有一个 PHP 脚本，它需要调用一个 shell 脚本，但根本不关心输出.shell 脚本进行了许多 SOAP 调用并且完成速度很慢，所以我不想在等待回复时减慢 PHP 请求的速度.其实PHP请求应该可以在不终止shell进程的情况下退出.
I've got a PHP script that needs to invoke a shell script but doesn't care at all about the output. The shell script makes a number of SOAP calls and is slow to complete, so I don't want to slow down the PHP request while it waits for a reply. In fact, the PHP request should be able to exit without terminating the shell process.
我研究了各种 exec()、shell_exec()、pcntl_fork() 等函数，但没有一个他们似乎提供了我想要的东西.(或者，如果他们这样做，我不清楚如何.)有什么建议吗?
I've looked into the various exec(), shell_exec(), pcntl_fork(), etc. functions, but none of them seem to offer exactly what I want. (Or, if they do, it's not clear to me how.) Any suggestions?
如果它不关心输出"，就不能用 & 调用脚本的 exec后台处理?
If it "doesn't care about the output", couldn't the exec to the script be called with the & to background the process?
EDIT - 结合@AdamTheHut 对这篇文章的评论，您可以将其添加到对 exec 的调用:
EDIT - incorporating what @AdamTheHut commented to this post, you can add this to a call to exec:
" > /dev/null 2>/dev/null &"
这会将stdio(第一个>)和stderr(2>)重定向到/dev/null 并在后台运行.
That will redirect both stdio (first >) and stderr (2>) to /dev/null and run in the background.
有其他方法可以做同样的事情，但这是最容易阅读的.
There are other ways to do the same thing, but this is the simplest to read.
上述双重重定向的替代方法:
An alternative to the above double-redirect:
" &> /dev/null &"