SimpleXML 不断返回 CDATA 元素上的内容
这是另一个 CDATA 返回内容的问题。我看过很多答案，但即使我尝试了所有答案，我仍然只得到内容。
更详细地说：
我有一个 xml 文件（里面包含许多 NewsItem）：
<NewsML>
<NewsItem>
<NewsComponent>
<ContentItem>
<DataContent>
<body>
<body.content>
<![CDATA[<p>This is what I am trying to retrieve</p>]]>
</body.content>
</body>
</DataContent>
</ContentItem>
</NewsComponent>
</NewsItem>
我正在尝试获取 body.content 的内容。
这是我的代码：
$xml = simplexml_load_file('path/to/my/xml.xml',null,LIBXML_NOCDATA);
if(count($xml->children()) > 0){
foreach($xml->children() as $element){
$description = (string)$element->NewsComponent->ContentItem->DataContent->body->body.content;
echo $description;
}
}
echo '<pre>';
print_r($xml);
echo '</pre>';
我的回声返回： 内容，
即使我确实在 xml 的 print_r 中看到了内容，正如我们在这里看到的：
SimpleXMLElement Object
(
[NewsItem] => Array
(
[0] => SimpleXMLElement Object
(
[NewsComponent] => SimpleXMLElement Object
(
[ContentItem] => Array
(
[0] => SimpleXMLElement Object
(
[DataContent] => SimpleXMLElement Object
(
[body] => SimpleXMLElement Object
(
[body.content] => This is what I am trying to retieve
)
)
)
)
)
)
我尝试在元素上使用 (string) 或不使用 (string) 。
我也尝试过使用
$xml = simplexml_load_file('path/to/my/xml.xml',null,LIBXML_NOCDATA);
vs
$xml = simplexml_load_file('path/to/my/xml.xml',"SimpleXMLElement",LIBXML_NOCDATA);
vs
$xml = simplexml_load_file('path/to/my/xml.xml');
So another CDATA returning content question. I've seen many answers, but even though I tried them all, I still get only content.
In more details:
I have an xml file (containing many NewsItem inside):
<NewsML>
<NewsItem>
<NewsComponent>
<ContentItem>
<DataContent>
<body>
<body.content>
<![CDATA[<p>This is what I am trying to retrieve</p>]]>
</body.content>
</body>
</DataContent>
</ContentItem>
</NewsComponent>
</NewsItem>
I am trying to get the content of body.content.
Here is my code:
$xml = simplexml_load_file('path/to/my/xml.xml',null,LIBXML_NOCDATA);
if(count($xml->children()) > 0){
foreach($xml->children() as $element){
$description = (string)$element->NewsComponent->ContentItem->DataContent->body->body.content;
echo $description;
}
}
echo '<pre>';
print_r($xml);
echo '</pre>';
My echo returns:
content
even though I do see the content in the print_r of my xml, as we can see here:
SimpleXMLElement Object
(
[NewsItem] => Array
(
[0] => SimpleXMLElement Object
(
[NewsComponent] => SimpleXMLElement Object
(
[ContentItem] => Array
(
[0] => SimpleXMLElement Object
(
[DataContent] => SimpleXMLElement Object
(
[body] => SimpleXMLElement Object
(
[body.content] => This is what I am trying to retieve
)
)
)
)
)
)
I tried using (string) or not on the element.
I also tried using
$xml = simplexml_load_file('path/to/my/xml.xml',null,LIBXML_NOCDATA);
vs
$xml = simplexml_load_file('path/to/my/xml.xml',"SimpleXMLElement",LIBXML_NOCDATA);
vs
$xml = simplexml_load_file('path/to/my/xml.xml');
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（2）
对于不能是 PHP 标识符的元素名称（例如
body.content），您必须使用替代的 PHP 表示法：For element names which cannot be PHP identifiers (like
body.content), you must use an alternative PHP notation:我认为你的示例返回“content”，因为你将一个不存在的元素
与字符串“content”连接起来 - 可能 PHP 抱怨名称 content 没有常量，因此假设你的意思是“content”。
因此我的猜测是您需要找到另一种方法来选择名称中带有点的元素。
（此问题似乎与 CDATA 无关。）
I think your example returns 'content' because you are concatenating an element that does not exist
with the string 'content' - probably PHP complains that there's no constant with the name content and therefore assumes you meant 'content'.
Thus my guess is you need to find another way to select an element with a dot in the name.
(This problem does not appear to be related to CDATA.)