Reputation: 14659
I have an XML file that looks something like this:
<product>
<modelNumber>Data</modelNumber>
<salePrice>Data</salePrice>
</product>
<product>
<modelNumber>Data</modelNumber>
<salePrice>Data</salePrice>
</product>
Is there a simple way to change the tag names , to something else such as model, price.
Essentially, I have a bunch of XML files containing similar data, but in different formats, so I'm looking for a simple way to parse the XML file, change certain tag names, and write a new XML file with the changed tag names.
Upvotes: 9
Views: 7773
Reputation: 293
There are two issues with Kris and dfsq code:
A corrected renaming function is:
function renameTag( DOMElement $oldTag, $newTagName ) {
$document = $oldTag->ownerDocument;
$newTag = $document->createElement($newTagName);
$oldTag->parentNode->replaceChild($newTag, $oldTag);
foreach ($oldTag->attributes as $attribute) {
$newTag->setAttribute($attribute->name, $attribute->value);
}
foreach (iterator_to_array($oldTag->childNodes) as $child) {
$newTag->appendChild($oldTag->removeChild($child));
}
return $newTag;
}
Upvotes: 8
Reputation: 193301
Next function will do the trick:
/**
* @param $xml string Your XML
* @param $old string Name of the old tag
* @param $new string Name of the new tag
* @return string New XML
*/
function renameTags($xml, $old, $new)
{
$dom = new DOMDocument();
$dom->loadXML($xml);
$nodes = $dom->getElementsByTagName($old);
$toRemove = array();
foreach ($nodes as $node)
{
$newNode = $dom->createElement($new);
foreach ($node->attributes as $attribute)
{
$newNode->setAttribute($attribute->name, $attribute->value);
}
foreach ($node->childNodes as $child)
{
$newNode->appendChild($node->removeChild($child));
}
$node->parentNode->appendChild($newNode);
$toRemove[] = $node;
}
foreach ($toRemove as $node)
{
$node->parentNode->removeChild($node);
}
return $dom->saveXML();
}
// Load XML from file data.xml
$xml = file_get_contents('data.xml');
$xml = renameTags($xml, 'modelNumber', 'number');
$xml = renameTags($xml, 'salePrice', 'price');
echo '<pre>'; print_r(htmlspecialchars($xml)); echo '</pre>';
Upvotes: 6
Reputation: 41877
There is some sample code that works in my question over here, but there is no direct way of changing a tag name through DOMDocument/DOMElement, you can however copy elements with a new tagname as shown.
basically you have to:
function renameTag(DOMElement $oldTag, $newTagName)
{
$document = $oldTag->ownerDocument;
$newTag = $document->createElement($newTagName);
foreach($oldTag->attributes as $attribute)
{
$newTag->setAttribute($attribute->name, $attribute->value);
}
foreach($oldTag->childNodes as $child)
{
$newTag->appendChild($oldTag->removeChild($child));
}
$oldTag->parentNode->replaceChild($newTag, $oldTag);
return $newTag;
}
Upvotes: 1