PHP Worker file that restarts after crash

Procfile

worker: while true; do cd /app/www/ && /app/bin/php worker.php; sleep 1; done

worker.php

<?php

while (true) {
    echo 'Hello world at ' . time() . PHP_EOL;
    sleep(1);
}

I think it would be a good idea to add a logger before the sleep so that you can see in your logs if your worker crashes or not. This way you know that you have some fatal error or something in your PHP worker.

Make sure if you use this on Heroku to add:

-d apc.enabled=0

to disable apc in the worker otherwise you'll get some serious caching problems.

For heroku to automatically detect this as a PHP project for it's build-pack, you also need a composer.json file, even if it's empty (contains {}).