将Laravel Artisan命令作为新过程运行

Question

So in general you can say exec('MyCommand &> /dev/null &') in php and MyCommand will be executed as a seperate process, so your primary php execution can continue on it's merry way.

Oddly, if you try to do this using Laravel's Artisan , something goes sideways. For instance, exec('php artisan command &> /dev/null &') results, surprisingly, in the process still just hanging until the artisan command finishes. If you wrap the artisan command in a bash script, it won't execute at all.

Why is this, and how can I execute an artisan command in a new, detached process?

Answer 1

You'll have to create a new process to run it:

$pid = pcntl_fork();

switch($pid)
{
    case -1:    // pcntl_fork() failed
        die('could not fork');

    case 0:    // you're in the new (child) process
        exec("php artisan command");

        // controll goes further down ONLY if exec() fails
        echo 'exec() failed';

    default:  // you're in the main (parent) process in which the script is running
        echo "hello";
}