ok, so if my local server starts than can i use the Blynk Firmware functions ( i.e. Blynk.begin(), Blunk.connect(),BLYNK_WRITE etc) within my own custom php mobile application?
Thanks
No… the Blynk App is essential, Local or Cloud server, doesn’t matter.
Yes, you may be able to duplicate things like buttons with the API commands from the DIY app, and send sketch commands to your DIY App via the webhook, but your sketch still needs to communicate to the Blynk App as well.
Stop trying to reinvent the Blynk shaped wheel this way… just use it as intended, and experiment with your DIY App and/or pay for a custom App on the commercial side if you really need something.