Stop creating inaccessible global constants "0" and "1"
Stop creating inaccessible global constants "0" and "1"

This was a side effect of the macro that was used to declare constants
for the values of the stringified version of the constant name.

`get_defined_constants(true)['mosquitto']` can be used to show the old
constants (`["MOSQ_LOG_INFO"] => 1, ..., "0" => 0, "1" => 1]`)

mgdm/Mosquitto-PHP,mgdm/Mosquitto-PHP,mgdm/Mosquitto-PHP