User input (input fields and ok buttons)

As a new user I would like to use Grafana for my Rasdberry Pi projects as I am very impressed from the features and design of Grafana.
There are some things I am missing, or maybe I haven’t found it yet: user input and php support when pressing a button.

What I would like to do is to add some input fields - for strings or numbers - and an ok button to a panel, and if the user presses the ok button, some simple php commands - like starting an external program, saving the text of the input field to a text file in the user directory - should be triggered.

This way, the user could change the ip adress of the Raspberry, and could controll leds or machines.

Is there any possibility to do that with Grafana, as I couldn’t find that in the panels of the initial demo?