Thank you very much, this has helped me out.
Now I see the idea - to use PHP to process JSON to give better response to IoT device. It has helped me on the other topic as well - Iot device time synchronization with domoticz server.

Thanks a lot for pointing it out. too bad, such php scripts are beyond my comprehension

Thanks for the answer. That is exactly the intention, to read Idx on the first access and then store it for subsequent use.

Then the question is, how would you suggest to query the api?

Hello All, i have looked for the feature, but have failed to find. Pls, excuse me, if something similar exists. Is it possible to extend JSON processing to query device information name, e.g. the following query http://domoticz:8080/json.htm?type=devices&name=Temp_test1 could respond with { "ActTime ...