Missing xml opening tag

[doc1355]

I have a process.php with the following code:

[PHP]<?php
$xdoc = new DomDocument;
$xdoc->Load('1.xml' );
$test = $xdoc->save("2.xml" );
?>[/PHP]

It should load 1.xml file, and saves it as 2.xml.
Here is my 1.xml file:

<?xml version="1.0" encoding="UTF-8"?>
<products>
  <product>
    <sku>10001</sku>
    <ti>Searchlight</ti>
    <qty>3</qty>
    <price>822.51</price>
    <st>1</st>
  </product>
  <product>
    <sku>10002</sku>
    <ti>Radio</ti>
    <qty></qty>
    <price>320.86</price>
    <st></st>
  </product>
</products>

and here is my 2.xml:

<?xml version="1.0" encoding="UTF-8"?>
<products>
  <product>
    <sku>10001</sku>
    <ti>Searchlight</ti>
    <qty>3</qty>
    <price>822.51</price>
    <st>1</st>
  </product>
  <product>
    <sku>10002</sku>
    <ti>Radio</ti>
    </qty>
    <price>320.86</price>
    </st>
  </product>
</products>

When I look at 2.xml, if there was a child element that had no value (<qty> and <st>) in 1.xml, it shows only as </qty> and </st> in 2.xml. The opening tag is not there. Is there anything I'm doing worng ? how can I fix this?

Thanks

[doc1355]

Anybody has any idea about this? There should be a way to fix this problem?

[Atli]

Hi.

There is technically nothing wrong there.
When you load the XML into the DomDocument object it is parsed into nodes.
Then, when you save it, it gets parsed again into a XML file. The empty tag gets truncated into a single closing tag, as an empty tag should be.
(Although I would have expected it to be <tag />, but both are valid I guess.)

If you loaded the second one again and added a value to the tag, it should be saved like you expected it to be.

If you don't want this to happen, try adding a single space to it, see if that keeps it in it's original form.