How to Remove a Specific HTML Element and Its Contents by ID Using PHP Native DOM?

Stripping a Tag and Its Nested Content Using Tag ID with PHP Native DOM

Stripping specific HTML elements along with their inner content can be a common task in web development. In this case, you seek to remove the contents within a specific <div> element identified by its ID. Here's how you can achieve this using PHP Native DOM:

Solution:

PHP Native DOM provides a robust set of methods for manipulating HTML documents. To remove the specified nested content:

1. Initialize a new DOMDocument object ($dom) and load your HTML string ($htmlString).
2. Create a DOMXPath object ($xPath) for the DOM document.
3. Use XPath to query for the target element (//*[@id="anotherDiv"]).
4. Check if the query result has any items (i.e., if the target element exists).
5. Remove the target element's parent node from the DOM using removeChild().
6. Save the updated HTML to a string and echo it.

Code:

<code class="php">$dom = new DOMDocument;
$dom-&gt;loadHTML($htmlString);
$xPath = new DOMXPath($dom);
$nodes = $xPath-&gt;query('//*[@id=&amp;quot;anotherDiv&amp;quot;]');
if($nodes-&gt;item(0)) {
    $nodes-&gt;item(0)-&gt;parentNode-&gt;removeChild($nodes-&gt;item(0));
}
echo $dom-&gt;saveHTML();</code>

This code will remove everything starting from the <div id="anotherDiv"> element to its closing </div> and return the modified HTML.

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