title: Run PHP script "forever" in a VPS server
body: <p>I am sure this must be very easy, but I have no experience with unix.
  I have a PHP script that is a TCP client and registers received data into a mySQL database.<br>
  How can I have that PHP script running forever? I have root access via a console.
  From time to time I may need to stop it, change it and restart it again.<br>
  Please advice.<br>
  Kind regards</p>