PHP Laravel 5 CLI terminate signal override

Does PHP Laravel perform any cleanup when it get terminated by a terminate signal?

For example the following code:

class MyCommand extends Command
{
    protected $signature = 'get:help';
    protected $description = 'I need help';
    public function handle()
    {
        pcntl_async_signals(true);
        pcntl_signal(SIGTERM, [$this, "gracefullyShutdown"]);
        pcntl_signal(SIGINT, [$this, "gracefullyShutdown"]);

        // Do some task there.
    }

    public function gracefullyShutdown()
    {
        // Do I need to do any clean up?
        //exit(0);
    }
}

Because the terminate signal function got override, the handle() continues running.

If I want to call exit(0) in gracefullyShutdown() do I need to release memory or do anything else before exit(0)?

Or Can I call original terminate function like super.terminate() or something? (super.terminate() is psudo code)

via Chebli Mohamed