通过 PHP 将 json 格式化为 geojson
Formatting json to geojson via PHP
我正在尝试获取一些我从 mySQL 数据库调用的数据,以便以 GeoJSON 格式正确显示。这是我的一些 PHP 代码:
$data = array(); //setting up an empty PHP array for the data to go into
if($result = mysqli_query($db,$query)) {
while ($row = mysqli_fetch_assoc($result))
{
$data[] = $row;
}
}
$jsonData =json_encode($data);
$original_data = json_decode($jsonData, true);
$coordinates = array();
foreach($original_data as $key => $value) {
$coordinates[] = array($value['latitude'], $value['longitude']);
}
$new_data = array(
'type' => 'FeatureCollection',
'features' => array(array(
'type' => 'Feature',
'properties' => array('time' => $value['time']),
'geometry' => array('type' => 'Point', 'coordinates' => $coordinates),
),
),
);
$final_data = json_encode($new_data, JSON_PRETTY_PRINT);
print_r($final_data);
到目前为止,我已经设法让我的结果看起来像这样:
但我需要它们看起来像这样,以便每组坐标都有自己的 "type" 和 "properties" 键值对:
我已经在这个问题上找到了一些帮助 here,但我就是无法克服最后一个格式化障碍...
您需要构建特征而不是构建坐标:
$data = array(); //setting up an empty PHP array for the data to go into
if($result = mysqli_query($db,$query)) {
while ($row = mysqli_fetch_assoc($result))
{
$data[] = $row;
}
}
$jsonData =json_encode($data);
$original_data = json_decode($jsonData, true);
$features = array();
foreach($original_data as $key => $value) {
$features[] = array(
'type' => 'Feature',
'properties' => array('time' => $value['time']),
'geometry' => array(
'type' => 'Point',
'coordinates' => array(
$value['latitude'],
$value['longitude'],
1
),
),
);
}
$new_data = array(
'type' => 'FeatureCollection',
'features' => $features,
);
$final_data = json_encode($new_data, JSON_PRETTY_PRINT);
print_r($final_data);
我正在尝试获取一些我从 mySQL 数据库调用的数据,以便以 GeoJSON 格式正确显示。这是我的一些 PHP 代码:
$data = array(); //setting up an empty PHP array for the data to go into
if($result = mysqli_query($db,$query)) {
while ($row = mysqli_fetch_assoc($result))
{
$data[] = $row;
}
}
$jsonData =json_encode($data);
$original_data = json_decode($jsonData, true);
$coordinates = array();
foreach($original_data as $key => $value) {
$coordinates[] = array($value['latitude'], $value['longitude']);
}
$new_data = array(
'type' => 'FeatureCollection',
'features' => array(array(
'type' => 'Feature',
'properties' => array('time' => $value['time']),
'geometry' => array('type' => 'Point', 'coordinates' => $coordinates),
),
),
);
$final_data = json_encode($new_data, JSON_PRETTY_PRINT);
print_r($final_data);
到目前为止,我已经设法让我的结果看起来像这样:
但我需要它们看起来像这样,以便每组坐标都有自己的 "type" 和 "properties" 键值对:
我已经在这个问题上找到了一些帮助 here,但我就是无法克服最后一个格式化障碍...
您需要构建特征而不是构建坐标:
$data = array(); //setting up an empty PHP array for the data to go into
if($result = mysqli_query($db,$query)) {
while ($row = mysqli_fetch_assoc($result))
{
$data[] = $row;
}
}
$jsonData =json_encode($data);
$original_data = json_decode($jsonData, true);
$features = array();
foreach($original_data as $key => $value) {
$features[] = array(
'type' => 'Feature',
'properties' => array('time' => $value['time']),
'geometry' => array(
'type' => 'Point',
'coordinates' => array(
$value['latitude'],
$value['longitude'],
1
),
),
);
}
$new_data = array(
'type' => 'FeatureCollection',
'features' => $features,
);
$final_data = json_encode($new_data, JSON_PRETTY_PRINT);
print_r($final_data);