This PHP (tested in PHP7 OK) files and images files is support files for OSPy plugin: remote_notifications.
Visit Martin Pihrt's blog OSPy or Martin Pihrt's blog OSPy 2. for demonstrate the function of watering my OSPy flowers and remote_notifications plugin.
https://github.com/martinpihrt/OSPy-plugins-temp/tree/master/plugins/remote_notifications
OpenSprinkler Pi (OSPy) PHP files for plug-ins
Creative Commons Attribution-ShareAlike 3.0 license