如何将XML属性转换为文本节点

问题描述

我有一个PHP脚本，该脚本从远程服务器提取XML文件，并使用simplexml_load_string和json_encode将其转换为JSON.但是，simplexml_load_string似乎忽略了内联属性，如下所示:

I have a PHP script that pulls an XML file from a remote server, and converts it to JSON using simplexml_load_string and json_encode. However, the simplexml_load_string seems to ignore inline attributes, like so:

<AxisFeedrate dataItemId="iid7" timestamp="2012-03-21T15:15:41-04:00" sequence="7" name="Yfrt" subType="ACTUAL" units="MILLIMETER/SECOND">UNAVAILABLE</AxisFeedrate>

在这种情况下，JSON表示形式为{AxisFeedrate:'UNAVAILABLE'}

In this case the JSON representation would be {AxisFeedrate: 'UNAVAILABLE'}

但是，我需要使那些属性可用.我一直在想的一个想法是替换字符串，将属性变成文本节点，如下所示:

However, I need to have those attributes available. One idea I've been approaching is replacing strings to turn the attributes into text nodes like so:

<AxisFeedrate>
  <dataItemId>iid7</dataItemId>
  <timestamp>2012-03-21T15:15:41-04:00</timestamp>
  <sequence>7</sequence>
  <name>Yfrt</name>
  <subType>ACTUAL</subType>
  <units>MILLIMETER/SECOND"</units>
  <value>UNAVAILABLE</value>
</AxisFeedrate>

我可以使用常规查找/替换将属性转换为自己的标签元素，但是我无法将原始文本值包装在Value标记中，至少使用查找/替换是困难的.

I can turn the attributes into their own tag elements with regular find/replace, but I'm having trouble wrapping the original text value in a Value tag, at least with find/replace.

有什么好的方法可以做到这一点?上面的XML块位于不同数据项上的许多类似块的中间，因此我不能仅以> ...

What are some good approaches for doing this? The above chunk of XML is in the middle of many similar chunks on different data items, so I couldn't just start by replacing the first closing > with >...

推荐答案

您可以使用SimpleXML本身来读取属性.

You could use SimpleXML itself to read the attributes.

示例:

<?php
$xml=simplexml_load_string('<AxisFeedrate dataItemId="iid7" timestamp="2012-03-21T15:15:41-04:00" sequence="7" name="Yfrt" subType="ACTUAL" units="MILLIMETER/SECOND">UNAVAILABLE</AxisFeedrate>');

foreach($xml->attributes() as $k=>$v) {
    echo $k." -> ".(string)$v."\n";

}
?>

---

输出:

dataItemId -> iid7
timestamp -> 2012-03-21T15:15:41-04:00
sequence -> 7
name -> Yfrt
subType -> ACTUAL
units -> MILLIMETER/SECOND

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