How to get a specific tag in a DOMDocument in PHP?

Question

I have variable documents that I need to change on the fly. For example, I could have a document as follows:

<!--?xml version="1.0"?--> <item> <tag1></tag1> </item> <tag2> <item></item> <item></item> </tag2> 

This is very simplified, but I have tags with the same name at different levels. I want to get element tags in tag2. The actual tags in the files that I give have unique identifiers to distinguish them, as well as some other attributes. I need to find the tag, comment it out and save the xml. I was able to get a DOMDocument to return a "tag2" node, but I'm not sure how to access the element tags inside this structure.

Answer 1

This is the problem faced by the PHP DOMDocument class. First load the XML string using the loadHTML() method, and then use the XPath expression to move the DOM tree:

 $dom = new DOMDocument; libxml_use_internal_errors(true); $dom->loadHTML($html); $xpath = new DOMXPath($dom); $item_tags = $xpath->query('//tag2/item'); foreach ($item_tags as $tag) { echo $tag->tagName, PHP_EOL; // example } 

Demo version

Answer 2

 <?php $tag= new DOMDocument(); $tag->loadHTML($string); foreach ($tag->getElementsByTagName("tag") as $element) { echo $tag->saveXML($element); } ?> 

can help you .try it

Answer 3

 $DOMNode -> attributes -> getNamedItem( 'yourAttribute' ) -> value;