If you have a Gearman worker server and you have a Worker.php file, i.e.
$worker = new GearmanWorker();
Where does this file go? Does it go on the actual worker server and every worker server that you want to handle this type of job or what? Simple question. I just don't know the answer.
Yes. The worker machine becomes a worker machine by running this script. To run this script you need to put it on the machine and execute it, likely from the command line using