PHP JSON解析：处理键名中包含点号的场景

{
  "result": [
    {
      "id": 1,
      "lock.status": "locked"
    },
    {
      "id": 2,
      "lock.status": "unlocked"
    }
  ]
}

$jsonObject = json_decode($result);
foreach ($jsonObject->result as $data) {
    echo $data->lock.status; // 这将导致错误或意外行为
}

echo $data->{'lock.status'};

<?php

// 模拟从外部API获取的JSON数据
$jsonString = '{
  "result": [
    {
      "id": 101,
      "name": "Device A",
      "lock.status": "locked",
      "firmware.version": "1.2.3"
    },
    {
      "id": 102,
      "name": "Device B",
      "lock.status": "unlocked",
      "firmware.version": "1.2.4"
    },
    {
      "id": 103,
      "name": "Device C",
      "lock.status": "error",
      "firmware.version": "1.2.3"
    }
  ]
}';

// 将JSON字符串解码为PHP对象
$jsonObject = json_decode($jsonString);

// 检查解码是否成功以及是否存在'result'键
if ($jsonObject && isset($jsonObject->result) && is_array($jsonObject->result)) {
    echo "<h2>设备状态列表</h2>";
    echo "<table border='1' cellpadding='5' cellspacing='0'>";
    echo "<thead><tr><th>ID</th><th>名称</th><th>锁定状态</th><th>固件版本</th></tr></thead>";
    echo "<tbody>";

    // 遍历result数组中的每个数据项
    foreach ($jsonObject->result as $data) {
        // 使用正确的语法访问包含点号的键名
        $lockStatus = $data->{'lock.status'};
        $firmwareVersion = $data->{'firmware.version'};

        echo "<tr>";
        echo "<td>" . htmlspecialchars($data->id) . "</td>";
        echo "<td>" . htmlspecialchars($data->name) . "</td>";
        echo "<td>" . htmlspecialchars($lockStatus) . "</td>";
        echo "<td>" . htmlspecialchars($firmwareVersion) . "</td>";
        echo "</tr>";
    }

    echo "</tbody>";
    echo "</table>";
} else {
    echo "<p>JSON解码失败或数据结构不符合预期。</p>";
}

?>