如何将 php 数组从 mysql 返回到谷歌地理位置
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【中文标题】如何将 php 数组从 mysql 返回到谷歌地理位置【英文标题】:How to return php array from mysql into google geolocation 【发布时间】:2012-05-19 17:09:18 【问题描述】:我在 mysql 数据库中有数据,我希望能够读取 php 数组中的数据并将其用于谷歌地理定位。
所以对于这个例子,我只想使用SELECT *
语句,因为我不会用一些参数来打扰你......
我想要实现的是从 A 点到 B 点的标记线(取决于保存 GPS 位置的位置)
这是我想要在我的地图上拥有的链接:POLYLINE 在此示例中,数组中只有 4 个数据我想要更多。
所以现在我们可以回到代码上来了。这是我连接到 mysql 的 PHP 脚本。我一直在使用 mysqli,因为我稍后会在数据库中存储过程,所以不要混淆。
class dbMySql
static function Exec($query)
// open database
$conn = mysqli_connect(
$GLOBALS['cfg_db_Server'],
$GLOBALS['cfg_db_User'],
$GLOBALS['cfg_db_Pass']
);
if($conn === false)
throw new Exception(mysqli_connect_error());
mysqli_select_db($conn,$GLOBALS['cfg_db_Name']);
$result = mysqli_query($conn,$query);
if(is_bool($result) && !$result)
$error = mysqli_error($conn);
mysqli_close($conn);
throw new Exception($error);
mysqli_close($conn);
return $result;
如何将此 php 脚本连接到 google API 页面上的示例代码,并在单击按钮而不是固定值时插入我的数组值:
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<script type="text/javascript"
src="http://maps.googleapis.com/maps/api/js?key=KEY&sensor=true">
</script>
<script type="text/javascript">
function initialize()
var myLatLng = new google.maps.LatLng(0, -180);
var myOptions =
zoom: 3,
center: myLatLng,
mapTypeId: google.maps.MapTypeId.TERRAIN
;
var map = new google.maps.Map(document.getElementById("map_canvas"),
myOptions);
var flightPlanCoordinates = [
new google.maps.LatLng(37.772323, -122.214897),
new google.maps.LatLng(21.291982, -157.821856),
new google.maps.LatLng(-18.142599, 178.431),
new google.maps.LatLng(-27.46758, 153.027892)
];
var flightPath = new google.maps.Polyline(
path: flightPlanCoordinates,
strokeColor: "#FF0000",
strokeOpacity: 1.0,
strokeWeight: 2
);
flightPath.setMap(map);
</script>
</head>
<body onload="initialize()">
<div id="map_canvas" style="width:100%; height:80%"></div>
<div><button type="button">Click Me!</button></div>
</body>
</html>
编辑:
这是我在执行您的代码时得到的:
EDIT2:
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<style type="text/css">
html height: 100%
body height: 100%; margin: 0; padding: 0
#map_canvas height: 100%
</style>
<script type="text/javascript"
src="http://maps.googleapis.com/maps/api/js?key=key&sensor=true">
</script>
<script type="text/javascript">
function initialize()
var myLatLng = new google.maps.LatLng(0, 180);
var myOptions =
zoom: 3,
center: myLatLng,
mapTypeId: google.maps.MapTypeId.TERRAIN
;
var map = new google.maps.Map(document.getElementById("map_canvas"),
myOptions);
var flightPlanCoordinates = [ <?php echo implode(',', $coordinates) ?> ];
];
var flightPath = new google.maps.Polyline(
path: flightPlanCoordinates,
strokeColor: "#FF0000",
strokeOpacity: 1.0,
strokeWeight: 2
);
flightPath.setMap(map);
</script>
</script>
<?PHP
class dbMySql
static function Exec($query)
// open database
$conn = mysqli_connect('localhost','root','*****');
if($conn === false)
throw new Exception(mysqli_connect_error());
mysqli_select_db($conn,'data_gps');
$result = mysqli_query($conn,$query);
if(is_bool($result) && !$result)
$error = mysqli_error($conn);
mysqli_close($conn);
throw new Exception($error);
mysqli_close($conn);
return $result;
$coordinates = array();
$result = dbMySql::Exec('SELECT lat,lng FROM data');
while ($row = mysqli_fetch_assoc($result))
$coordinates[] = 'new google.maps.LatLng(' . $row['lat'] . ', ' . $row['lng'] . ')' ;
?>
</script>
</head>
<body onload="initialize()">
<div id="map_canvas" style="width:100%; height:80%"></div>
<div><button type="button">Click Me!</button></div>
</body>
</html>
【问题讨论】:
【参考方案1】:我猜您需要在结果之间进行迭代,然后将它们回显到 javascript 中。
我假设您的数据库中存储了 lat 和 lng。
$coordinates = array();
$result = dbMySql::Exec('SELECT lat, lng FROM table WHERE id = 1');
while ($row = mysqli_fetch_assoc($result))
$coordinates[] = 'new google.maps.LatLng(' . $row['lat'] . ', ' . $row['lng'] . ')';
然后在你的 javascript 部分
var flightPlanCoordinates = [ <?php echo implode(',', $coordinates) ?> ];
编辑:
<!DOCTYPE html>
<?PHP
class dbMySql
static function Exec($query)
// open database
$conn = mysqli_connect('localhost','root','*****');
if($conn === false)
throw new Exception(mysqli_connect_error());
mysqli_select_db($conn,'data_gps');
$result = mysqli_query($conn,$query);
if(is_bool($result) && !$result)
$error = mysqli_error($conn);
mysqli_close($conn);
throw new Exception($error);
//mysqli_close($conn);
return $result;
$coordinates = array();
$result = dbMySql::Exec('SELECT lat,lng FROM data');
while ($row = mysqli_fetch_assoc($result))
$coordinates[] = 'new google.maps.LatLng(' . $row['lat'] . ', ' . $row['lng'] . ')';
?>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<style type="text/css">
html height: 100%
body height: 100%; margin: 0; padding: 0
#map_canvas height: 100%
</style>
<script type="text/javascript"
src="http://maps.googleapis.com/maps/api/js?key=key&sensor=true">
</script>
<script type="text/javascript">
function initialize()
var myLatLng = new google.maps.LatLng(0, 180);
var myOptions =
zoom: 3,
center: myLatLng,
mapTypeId: google.maps.MapTypeId.TERRAIN
;
var map = new google.maps.Map(document.getElementById("map_canvas"),
myOptions);
var flightPlanCoordinates = [<?php echo implode(',', $coordinates) ?>];
var flightPath = new google.maps.Polyline(
path: flightPlanCoordinates,
strokeColor: "#FF0000",
strokeOpacity: 1.0,
strokeWeight: 2
);
flightPath.setMap(map);
</script>
</head>
<body onload="initialize()">
<div id="map_canvas" style="width:100%; height:80%"></div>
<div><button type="button">Click Me!</button></div>
</body>
</html>
【讨论】:
嗨,我已经尝试过你的代码。当我执行回波坐标时,我真的得到了经度和纬度的结果。但是当我把它放在我的代码中时它不起作用。地图未加载,我已将 php 放入脚本中 您的文件是否以 '.php' 结尾? 大家好,我需要你的帮助。检查这个问题:***.com/questions/10931109/…以上是关于如何将 php 数组从 mysql 返回到谷歌地理位置的主要内容,如果未能解决你的问题,请参考以下文章