获取天气-步骤10-底线。。。

Posted 2021-02-25

//back to our "black roots"...
class WeatherService{
 
	private $cache;
 
	public function WeatherService(){
		//some initialization...
		$cache = new DBCache();  //******** THE ONLY THING CHANGED !!!!!!!!!!!!!!!!!
	}
 
	public function getWeatherInfo($city, $method){
 
		if ($cache->get($city))
			return $cache->get($city);
 
		$res = shell_exec("./getWdr.sh {$city}");
 
		if ($methos=="CL")
			return convertFrToC($res);
 
		return $res;
	}
 
	private function convertFrToC($val){
		return (($val+40)*5/9)-40;
	}
 
}