Change Tag Attribute Value with PHP Domdocument

Ensure the media namespace is defined in the returned XML otherwise DOMDocument will error out.

If you are getting a specific error, please edit your post to include it

$xmldoc = new DOMDocument();
$xmldoc->load('api response address');
foreach ($xmldoc->getElementsByTagName('item') as $feeditem) $nodes = $feeditem->getElementsByTagName('file'); 
$linkthumb = $nodes->item(0)->getAttribute('data'); 
echo $linkthumb;
>

You may also want to look at SimpleXML and Xpath as it makes reading XML much easier than DOMDocument.

How to user DOMElement to replace attribute value

PHP is different from jQuery in a lot of very significant ways, but to answer your question:

$domelement->setAttribute("href", "http://www.google.se");

You might want to consult the documentation.

PHP DOMDocument remove tag attribute

Probably xml:lang=»en» is not corrected value of attribute in html. Change these lines:

$dom->loadHTML($content, LIBXML_HTML_NOIMPLIED);
//code. 
echo $dom->saveHTML($dom->documentElement);

$dom->loadXML($content, LIBXML_HTML_NOIMPLIED);
//code. 
echo $dom->saveXML($dom->documentElement);

Modify XML attribute PHP DOM

Not sure what you want to do exactly, but the general idea is :

• You must instanciate DOMDocument
• and load your XML strings with it : DOMDocument::loadXML
• Then, you must instanciate DOMXpath on that document
• And use it to query the document : DOMXPath::query
• One you have found the node that interests you, you can manipulate it

Here, for example, you could use some thing like this :

$str =  
 
 
 
XML;

$dom = new DOMDocument();
$dom->loadXML($str);

$xpath = new DOMXPath($dom);
$elements = $xpath->query('//record[@id="my record"]');
if ($elements->length >= 1) $element = $elements->item(0); 
$element->setAttribute('id', "glop !");
>
echo '
' . htmlspecialchars($dom->saveXML()) . '
 
';
 
This will replace the id attribute my record , on the node that’s identified by it, by » glop ! «, and you’d get the following XML as output :
 
PHP DOMDocument: Get attribute value from id
 
$attrs = array(); 
for ($i = 0; $i < $data->attributes->length; ++$i) $node = $data->attributes->item($i); 
$attrs[$node->nodeName] = $node->nodeValue; 
> 
var_dump($attrs);
 
In PHP, how can I use the DOMDocument class to replace the src= attribute of an IMG tag?
 
This is what I’ve come up with. It uses the PHP DOM API to create a tiny HTML document, then saves the XML for just the IMG element.
 
function replace_img_src($original_img_tag, $new_src_url) $doc = new DOMDocument(); 
$doc->loadHTML($original_img_tag);
 
$tags = $doc->getElementsByTagName('img'); 
if(count($tags) > 0) 
 $tag = $tags->item(0); 
$tag->setAttribute('src', $new_src_url); 
return $doc->saveHTML($tag); 
>
 
return false;
>
 
Note: In versions of PHP before 5.3.6, $doc->saveHTML($tag) can be changed to $doc->saveXML($tag) .
 
DOMDocument add attribute to root tag
 
When you output the HTML, select a specific node rather than the whole document:
 

$content = '
Lorem
';

$dom = new \DOMDocument();
$dom->loadHTML($content);

$node = $dom->getElementsByTagName('h1')->item(0);
$node->setAttribute('data-custom','true');

print $dom->saveHTML($node);
// 
Lorem
 
 
Alternatively, as it’s well-formed, treat the content as XML to avoid extra HTML tags being added:
 

$content = '
Lorem
';

$dom = new \DOMDocument();
$dom->loadXML($content);

$dom->documentElement->setAttribute('data-custom','true');

print $dom->saveXML($dom->documentElement);
// 
Lorem
 
 
Источник
 
How do I change XML tag names with PHP?
 
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.
 
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; > 
 
There are two issues with Kris and dfsq code:
 
 
Only first child node will be copied — solved with temporary copy of $childNodes)
 
Children will get xmlns tag — solved by replacing node at the beginning — so it’s connected to the document
 
 
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; > 
 
 
 Rafał Lindemann 283
 
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Источник
 
How do I change XML tag names with PHP?
 
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.
 
Ryan
 
People also ask
 
If you run the XML file as a PHP script, then yes. The output of the script will be valid XML, but the file that contains the inline PHP will most likely not be valid XML. Save this answer.
 
Custom tags use XML syntax and are what page authors use. This is an umbrella term that describes the set of classes and conventions that allow programmers to create custom actions and tags within JSP. The tag extension mechanism was added to JSP in version 1.1.
 
The XML document must have start-tag, so first starting tag is known as root tag. The opening tag started with < bracket followed by tag name or element name and close with >bracket.
 
2 Answers
 
There are two issues with Kris and dfsq code:
 
 
Only first child node will be copied — solved with temporary copy of $childNodes)
 
Children will get xmlns tag — solved by replacing node at the beginning — so it’s connected to the document
 
 
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; > 
 
 
answered Oct 24 ’22 05:10 
 
Rafał Lindemann
 
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 '
'; print_r(htmlspecialchars($xml)); echo '
 
'; 
 
Источник