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[英]How do I calculate total distance from Point A to point B along a certain path using PHP & the google API?
[英]Distance from point A to B using Google Maps, PHP and MySQL
誰能請幫忙。 我只需要一個簡單的腳本。 我有一張表格張貼到另一頁。 兩個表格是:
fromaddress和toaddress
我唯一需要的是一個腳本,它顯示了以km為單位的距離以及使用谷歌地圖所需的時間。 我找到了幾十個腳本,但我無法使用它。 地圖已經存在,這個代碼看起來很完美。
<script type="text/javascript" src="//maps.googleapis.com/maps/api/js?key=AIzaSyDdDwV6_l5n2bS3gM6NBCla3RFLtIFc_HE&sensor=false"></script><script type="text/javascript">
var directionDisplay;
var directionsService = new google.maps.DirectionsService();
var map;
function initialize() {
directionsDisplay = new google.maps.DirectionsRenderer();
var myOptions = {
zoom: 8,
mapTypeId: google.maps.MapTypeId.ROADMAP,
}
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
directionsDisplay.setMap(map);
var start = "<? echo $_POST[fromaddress]; ?>";
var end = "<? echo $_POST[toaddress]; ?>";
var request = {
origin:start,
destination:end,
travelMode: google.maps.DirectionsTravelMode.DRIVING
};
directionsService.route(request, function(response, status) {
if (status == google.maps.DirectionsStatus.OK) {
directionsDisplay.setDirections(response);
}
});
}
$(document).ready(function(){
initialize();
});
</script>
但是我如何顯示距離和時間。 最好的選擇是使用php值來獲取它:
$distance = some-code;
$time = some-code-too;
非常感謝您的幫助。
您需要使用不同的API。 首先,不要使用JS而是使用PHP,這里的代碼片段應該適合你;)
$from = "Więckowskiego 72, Łódź";
$to = "Gazowa 1, Łódź";
$from = urlencode($from);
$to = urlencode($to);
$data = file_get_contents("http://maps.googleapis.com/maps/api/distancematrix/json?origins=$from&destinations=$to&language=en-EN&sensor=false");
$data = json_decode($data);
$time = 0;
$distance = 0;
foreach($data->rows[0]->elements as $road) {
$time += $road->duration->value;
$distance += $road->distance->value;
}
echo "To: ".$data->destination_addresses[0];
echo "<br/>";
echo "From: ".$data->origin_addresses[0];
echo "<br/>";
echo "Time: ".$time." seconds";
echo "<br/>";
echo "Distance: ".$distance." meters";
輸出:
To: Gazowa 1, 91-076 Łódź, Poland
From: Więckowskiego 72, Łódź, Poland
Time: 206 seconds
Distance: 1488 meters
您可以通過累加所有腿來計算完整的路線持續時間和距離:
function computeTotals(result) {
var totalDist = 0;
var totalTime = 0;
var myroute = result.routes[0];
for (i = 0; i < myroute.legs.length; i++) {
totalDist += myroute.legs[i].distance.value;
totalTime += myroute.legs[i].duration.value;
}
totalDist = totalDist / 1000.
document.getElementById("total").innerHTML = "total distance="+totalDist.toFixed(2) + " km ("+(totalDist*0.621371).toFixed(2)+" miles), time="+totalTime+" seconds";
}
這樣叫:
directionsService.route(request, function(response, status) {
if (status == google.maps.DirectionsStatus.OK) {
directionsDisplay.setDirections(response);
computeTotals(response);
}
});
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