public function clientTempF($cb)
    {
        $this->remote->temperature(function($degC) use ($cb) {
            $degF = round($degC * 9 / 5 + 32);
            $cb($degF);
        });
    }
public function clientTempF($cb)
    {
        $this->remote->temperature(function($degC) use ($cb) {
            $degF = round($degC * 9 / 5 + 32);
            $cb($degF);
        });
    }
public function clientTempF ( $ cb ) { $ this -> remote -> temperature ( function ( $ degC ) use ( $ cb ) { $ degF = round ( $ degC * 9 / 5 + 32 ) ; $ cb ( $ degF ) ; } ) ; }
fahrenheit in the supplied callback
fahrenheit in the supplied callback