Run php script as daemon process

Question

I need to run a php script as daemon process (wait for instructions and do stuff). cron job will not do it for me because actions need to be taken as soon as instruction arr

Answer 1

Another option is to use Upstart. It was originally developed for Ubuntu (and comes packaged with it by default), but is intended to be suitable for all Linux distros.

This approach is similar to Supervisord and daemontools, in that it automatically starts the daemon on system boot and respawns on script completion.

How to set it up:

Create a new script file at /etc/init/myphpworker.conf. Here is an example:

# Info
description "My PHP Worker"
author      "Jonathan"

# Events
start on startup
stop on shutdown

# Automatically respawn
respawn
respawn limit 20 5

# Run the script!
# Note, in this example, if your PHP script returns
# the string "ERROR", the daemon will stop itself.
script
    [ $(exec /usr/bin/php -f /path/to/your/script.php) = 'ERROR' ] && ( stop; exit 1; )
end script

Starting & stopping your daemon:

sudo service myphpworker start
sudo service myphpworker stop

Check if your daemon is running:

sudo service myphpworker status

Thanks

A big thanks to Kevin van Zonneveld, where I learned this technique from.