[英]Get driving distance between two points using Google Maps API
我正在尝试使用Google Maps API获得两点之间的行驶距离。 现在,我有直接获得距离的代码:
此函数获取经纬度:
function get_coordinates($city, $street, $province)
{
$address = urlencode($city.','.$street.','.$province);
$url = "http://maps.google.com/maps/api/geocode/json?address=$address&sensor=false®ion=Poland";
$ch = curl_init();
curl_setopt($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);
$return = array('lat' => $response_a->results[0]->geometry->location->lat, 'long' => $long = $response_a->results[0]->geometry->location->lng);
return $return;
}
此函数根据纬度和经度计算两点之间的距离:
function getDistanceBetweenPoints($lat1, $lon1, $lat2, $lon2) {
$theta = $lon1 - $lon2;
$miles = (sin(deg2rad($lat1)) * sin(deg2rad($lat2))) + (cos(deg2rad($lat1)) * cos(deg2rad($lat2)) * cos(deg2rad($theta)));
$miles = acos($miles);
$miles = rad2deg($miles);
$miles = $miles * 60 * 1.1515;
$kilometers = $miles * 1.609344;
return $kilometers;
}
此功能以公里为单位打印距离:
function get_distance($lat1, $lat2, $long1, $long2)
{
/* These are two points in New York City */
$point1 = array('lat' => $lat1, 'long' => $long1);
$point2 = array('lat' => $lat2, 'long' => $long2);
$distance = getDistanceBetweenPoints($point1['lat'], $point1['long'], $point2['lat'], $point2['long']);
return $distance;
}
用法:
$coordinates1 = get_coordinates('Katowice', 'Korfantego', 'Katowicki');
$coordinates2 = get_coordinates('Tychy', 'Jana Pawła II', 'Tyski');
echo 'Distance: <b>'.round(get_distance($coordinates1['lat'], $coordinates2['lat'], $coordinates1['long'], $coordinates2['long']), 1).'</b> km';
但是这段代码获得直接的距离。 我需要行车距离。 如何使用Google Maps API获取行驶距离?
谢谢你的帮助!
好的,我找到了使用距离矩阵的解决方案: https : //developers.google.com/maps/documentation/distancematrix/#DistanceMatrixRequests
此功能可从城市,地址,省获得经纬度:
function get_coordinates($city, $street, $province)
{
$address = urlencode($city.','.$street.','.$province);
$url = "http://maps.google.com/maps/api/geocode/json?address=$address&sensor=false®ion=Poland";
$ch = curl_init();
curl_setopt($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);
$status = $response_a->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 $return;
}
}
该函数计算行驶距离和行驶时间:
function GetDrivingDistance($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);
}
用法:
$coordinates1 = get_coordinates('Tychy', 'Jana Pawła II', 'Śląskie');
$coordinates2 = get_coordinates('Lędziny', 'Lędzińska', 'Śląskie');
if ( !$coordinates1 || !$coordinates2 )
{
echo 'Bad address.';
}
else
{
$dist = GetDrivingDistance($coordinates1['lat'], $coordinates2['lat'], $coordinates1['long'], $coordinates2['long']);
echo 'Distance: <b>'.$dist['distance'].'</b><br>Travel time duration: <b>'.$dist['time'].'</b>';
}
返回:
距离:11,2 km行车时间:15分钟
您可以使用Google Distance Matrix API来做到这一点:
// $details = "http://maps.googleapis.com/maps/api/distancematrix/json?origins=Seattle&destinations=San+Francisco&mode=driving&sensor=false";
//you can also pass latitude/longitude values in origins
$details = "http://maps.googleapis.com/maps/api/distancematrix/json?origins=41.43206,-81.38992&destinations=San+Francisco&mode=driving&sensor=false";
$json = file_get_contents($details);
$details = json_decode($json, TRUE);
echo "<pre>"; print_r($details); echo "</pre>";
这是Google Distance Matrix API的链接:-https: //developers.google.com/maps/documentation/distancematrix/?csw=1
这就是我得到的方法。 在其中,您可以输入到会话或数据库的任何手动距离。
$origin = urlencode($_SESSION['source1']);
$destination = urlencode($_SESSION['dest1']);
$url = "https://maps.googleapis.com/maps/api/distancematrix/json?origins=$origin&destinations=$destination&key=Your api key";
$ch = curl_init();
curl_setopt($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);
?>
现在最困难的部分是如何显示距离。 通过研究,我得到了这个答案:
<div>
<?php echo $response_a['rows'][0]['elements'][0]['distance']['text']; ?>
</div>
您可以在任何地方打印此结果。 它为我工作。
距离矩阵API将完成工作,然后无需使用地址再按距离来计算坐标!!
PHP代码:
$ch = "https://maps.googleapis.com/maps/api/distancematrix/json?origins=orginaddress&destinations=destinationaddress&key=YOUR_API_KEY";
$ch = curl_init();
curl_setopt($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);
//print_( $response_a );
您可以尝试使用Google Distance Matrix API。 这是下面的示例HTML,PHP代码。 在这里,您必须使用应用程序密钥更改“ YOUR_API_KEY”。
<!DOCTYPE html>
<html>
<body>
<form action="" method="post">
<label>Origin:</label> <input type="text" name="o" placeholder="Enter Origin location" required> <br><br>
<label>Destination:</label> <input type="text" name="d" placeholder="Enter Destination location" required> <br><br>
<input type="submit" value="Calculate distance & time" name="submit"> <br><br>
</form>
<?php
if(isset($_POST['submit'])){
$origin = $_POST['o']; $destination = $_POST['d'];
$api = file_get_contents("https://maps.googleapis.com/maps/api/distancematrix/json?units=imperial&origins=".$origin."&destinations=".$destination."&key=YOUR_API_KEY");
$data = json_decode($api);
?>
<label><b>Distance: </b></label> <span><?php echo ((int)$data->rows[0]->elements[0]->distance->value / 1000).' Km'; ?></span> <br><br>
<label><b>Travel Time: </b></label> <span><?php echo $data->rows[0]->elements[0]->duration->text; ?></span>
<?php } ?>
</body>
</html>
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