Question

我有以下XML：

<channels>
  <channel>
    <name>Channel 1</name>
    <tid>15179</tid>
  </channel>
  <channel>
    <name>Channel 2</name>
    <tid>15177</tid>
  </channel>
  <channel>
    <name>Channel 3</name>
    <tid>15176</tid>
  </channel>
  <channel>
    <name>Channel 4</name>
    <tid>15407</tid>
  </channel>
  <channel>
    <name>Channel 5</name>
    <tid>15175</tid>
  </channel>
  <channel>
    <name>Channel 6</name>
    <tid>15178</tid>
  </channel>
</channels>

并使用SimpleXMLElement，我得到了这个对象：

SimpleXMLElement Object
(
    [channel] => Array
        (
            [0] => SimpleXMLElement Object
                (
                    [name] => Channel 1
                    [tid] => 15179
                )

            [1] => SimpleXMLElement Object
                (
                    [name] => Channel 2
                    [tid] => 15177
                )

            [2] => SimpleXMLElement Object
                (
                    [name] => Channel 3
                    [tid] => 15176
                )

            [3] => SimpleXMLElement Object
                (
                    [name] => Channel 4
                    [tid] => 15407
                )

            [4] => SimpleXMLElement Object
                (
                    [name] => Channel 5
                    [tid] => 15175
                )

            [5] => SimpleXMLElement Object
                (
                    [name] => Channel 6
                    [tid] => 15178
                )

        )

)

我试图简单地迭代这个对象以将通道放入一个数组中，但无论我如何尝试迭代，我得到的只是SimpleXMLElement对象，显然它不允许将它们用作数组键。例如，这个代码

$channel_data = new SimpleXMLElement($channel_xml->data);
foreach ($channel_data->children() as $nb_channel) {
  $channel_name = $nb_channel->name;
  $channel_tid = $nb_channel->tid;
  $target_channels[$channel_tid[0]] = $channel_name[0];
}

$ channel_name和$ channel_tid也作为SimpleXMLElements出现。如果我试试

foreach ($channel_data->channel as $nb_channel) {
  $channel_name = $nb_channel->name;
  $channel_tid = $nb_channel->tid;
  $target_channels[$channel_tid] = $channel_name;
}

$ channel-＆gt; name和$ channel-＆gt; tid也是simpleXMLElement对象。

SimpleXMLElement Object
(
    [name] => Channel 1
    [tid] => 15179
)

但是试图以

的形式访问它们

   $nb_channel->name;

给我另一个对象：

SimpleXMLElement Object
(
    [0] => Channel 1
)

迭代XML以获取数据并将其放入数组的正确方法是什么？

感谢。

Answer 1

和往常一样，“发布一个问题，然后找出答案”的原则是有效的。

诀窍是使用__toString（）将值转换为字符串：

$channel_data = new SimpleXMLElement($channel_xml->data);
foreach ($channel_data->channel as $nb_channel) {
  $channel_name = $nb_channel->name->__toString();
  $channel_tid = $nb_channel->tid->__toString();
  $target_channels[$channel_tid] = $channel_name;
}

一旦我这样做，我的变量就有了正确的数据，并且我能够填充$ target_channels数组。

无法迭代SimpleXMLElement对象并插入到数组中

1 个答案: