我正在创建一个路由应用程序并将结果作为 json 数组获取。将其转换为 php 数组后，我正确获得了整个距离和整个持续时间。现在我也需要关键“腿”中的每个值的距离和持续时间，但我为获取数据所做的一切都不起作用。
数组的 json 输出如下所示：
array (
'routes' =>
array (
0 =>
array (
'legs' =>
array (
0 =>
array (
'summary' => '',
'weight' => 3741.9,
'duration' => 2912.3, // This value is what i want access
'steps' =>
array (
),
'distance' => 21603.1, // This value is what i want access
),
1 =>
array (
'summary' => '',
'weight' => 3642.1,
'duration' => 2777.4, // This value is what i want access
'steps' =>
array (
),
'distance' => 21611.8, // This value is what i want access
),
),
'weight_name' => 'routability',
'weight' => 7384,
'duration' => 5689.700000000001, // This value i can acesss
'distance' => 43214.899999999994, // This value i can acesss too
),
),
'waypoints' =>
array (
0 =>
array (
'hint' => '',
'distance' => 16.78277948979663, // This value is what i want access
'name' => 'Weg',
'location' =>
array (
0 => 11.4623,
1 => 50.7126,
),
),
1 =>
array (
'hint' => '',
'distance' => 16.62835508134535,
'name' => 'Weg',
'location' =>
array (
0 => 12.6069,
1 => 51.5398,
),
),
2 =>
array (
'hint' => '',
'distance' => 16.78277948979663,
'name' => 'Weg',
'location' =>
array (
0 => 12.343,
1 => 51.576,
),
),
),
'code' => 'Ok',
)
我通过以下代码获得整个距离（43214.8）和整个持续时间（5689.7）：
foreach($res2['routes'] as $item)
{
$distances = array_push_assoc($distances, $item['distance'], $item['duration']);
}
为了获得距离和持续时间，我执行了以下操作：
foreach($res2['routes']['legs'] as $item)
{
$durations = array_push_assoc($durations , "DUR", $item['duration']);
}
如何从“腿”获得距离和持续时间？为什么不工作 $res2['routes']['legs']？
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