如何在不从PHP调用ps的情况下检查指定的PID是否当前正在运行? [英] How to check whether specified PID is currently running without invoking ps from PHP?

问题描述

我们想检查指定的进程当前是否正在通过PHP运行.

We would like to check if a specified process is currently running via PHP.

我们只想提供一个PID，看看它当前是否正在执行.

We would like to simply supply a PID and see if it is currently executing or not.

PHP是否有内部函数可以向我们提供此信息，或者我们必须从"ps"输出中解析出该信息?

Does PHP have an internal function that would give us this information or do we have to parse it out of "ps" output?

推荐答案

如果您使用的是Linux，请尝试以下操作:

If you are on Linux, try this :

if (file_exists( "/proc/$pid" )){
    //process with a pid = $pid is running
}

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