I have succeeded to send notification from the control panel to all the devices
However, I need to send notification from my app. Is it possible to give the simple example in native PHP that can send to:
1. all devices that has registered
2. one specific device (pls advise what I am using to identify the device? HWID or DeviceID?)
3. a group of devices base on certain condition that I can set
Looking forward to hear your reply, thanks so much in advance!
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