如何将Google Maps API v3距离矩阵的JSON输出解析为PHP？

{
  "rows": [
    {
      "elements": [
        {
          "distance": {
            "text": "1 km",
            "value": 0.009925538369553277
          },
          "duration": {
            "text": "1 min",
            "value": 0.0001377285979309783
          },
          "status": "OK"
        },
        {
          "distance": {
            "text": "2 km",
            "value": 0.019851076737404337
          },
          "duration": {
            "text": "2 min",
            "value": 0.0002754579696075222
          },
          "status": "OK"
        }
      ]
    }
  ],
  "status": "OK"
}

$jsonString = '
{
  "rows": [
    {
      "elements": [
        {
          "distance": {
            "text": "1 km",
            "value": 0.009925538369553277
          },
          "duration": {
            "text": "1 min",
            "value": 0.0001377285979309783
          },
          "status": "OK"
        },
        {
          "distance": {
            "text": "2 km",
            "value": 0.019851076737404337
          },
          "duration": {
            "text": "2 min",
            "value": 0.0002754579696075222
          },
          "status": "OK"
        }
      ]
    }
  ],
  "status": "OK"
}
';

$jsonObject = json_decode($jsonString);

// Now we can access the values of the JSON object
$rows = $jsonObject->rows;
$distance = $rows[0]->elements[0]->distance->value;
$duration = $rows[0]->elements[0]->duration->value;
$status = $rows[0]->elements[0]->status;

echo "Distance: $distance km, Duration: $duration minutes, Status: $status";