Google APIを利用して、PHPで２つの住所の距離と所要時間を取得する

Google APIを利用して、PHPで２つの住所の距離と所要時間を取得するサンプル※車での移動距離と所要時間

status;

    if ( $status == 'ZERO_RESULTS' )
    {
        return FALSE;
    }
    else
    {
        $return = array('lat' => $response_a->results[0]->geometry->location->lat, 'long' => $long = $response_a->results[0]->geometry->location->lng);
        return $return;
    }
}

function GetDrivingDistance($lat1, $lat2, $long1, $long2)
{
    $url = "https://maps.googleapis.com/maps/api/distancematrix/json?origins=".$lat1.",".$long1."&destinations=".$lat2.",".$long2."&mode=driving&language=pl-PL";
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_PROXYPORT, 3128);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
    $response = curl_exec($ch);
    curl_close($ch);
    $response_a = json_decode($response, true);
    $dist = $response_a['rows'][0]['elements'][0]['distance']['text'];
    $time = $response_a['rows'][0]['elements'][0]['duration']['text'];

    return array('distance' => $dist, 'time' => $time);
}
//Usage:

$coordinates1 = get_coordinates('東京都三鷹市上連雀8丁目3番3号');
$coordinates2 = get_coordinates('東京都千代田区富士見2-4-1');
if ( !$coordinates1 || !$coordinates2 )
{
    echo 'Bad address.';
}
else
{
    $dist = GetDrivingDistance($coordinates1['lat'], $coordinates2['lat'], $coordinates1['long'], $coordinates2['long']);
    echo 'Distance: '.$dist['distance'].'
Travel time duration: '.$dist['time'].'';
}

こんな風に結果が表示されます：

Distance: 22,3 km
Travel time duration: 40 min