anhlephuoc

The problem here is with your own basic PHP coding. Nothing to do phpMQTT code. You have received a suggestion for fixing you program; and you also have your own...

The IP address you used (tcp://http://192.168.1.166:1883) is obviously no good. The "HTTP://" has no business being there! The curly brace indexing is deprecated but is still usable. I assume that...