Question

Is there a way to start a script from another process, so that if the process dies/ends, the script still continues?

Will setuid do this? If I were to set the owner to root, and then start the script?

For example, if I have some PHP code starting a script, but httpd dies or gets killed, I think that it takes my script with it. Is there a way around this?

Specifically, I’m on Fedora 10 with Apache 2 and PHP 5.

Answer 1

From here:

function become_daemon() 
{
    $child = pcntl_fork();
    if($child) {
        exit; // kill parent
    }
    posix_setsid(); // become session leader
}

Additionally, it’s a good idea to close STDIN, STDOUT, and STDERR but I’m not sure how to do that in PHP.