distance-between-zipcode in KM

function distanceBetweenzipcodes($zipcode, $zipcode2){
    try{
        $url ="https://maps.googleapis.com/maps/api/distancematrix/json?origins=".$zipcode."&destinations=".$zipcode2."&mode=car&sensor=false&key=";
        $details=file_get_contents($url);
        $result = json_decode($details,true);
        $distance = $result['rows'][0]['elements'][0]['distance']['value'] ?? 0;
        if($distance==0){
            return 0;
        }
        return  $distance/1000;
    }
    catch(\Exception $e){
        return 0;
    }
}

echo distanceBetweenzipcodes(127021,127031);

#calculate distance between two zipcode. please pass google map api key to this method