clone table rows in php DOMDocument

gistfile1.txt

<?php
$html = '<table border="1">
    <tr>
        <td>property</td>
        <td>specification</td>
    </tr>
    <tr>
        <td>Data 1</td>
        <td>Data 2</td>
    </tr>

    <tr>
        <td>Data 3</td>
        <td>Data 4</td>
    </tr>

    <tr>
        <td>Data 3</td>
        <td>Data 4</td>
    </tr>

    <tr>
        <td>Data 3</td>
        <td>Data 4</td>
    </tr>

    <tr>
        <td>Data 3</td>
        <td>Data 4</td>
    </tr>

</table>';

// Load the HTML document
$doc = new DOMDocument();
$doc->loadHTML($html);

// Create a DOMXPath object
$xpath = new DOMXPath($doc);

// Find the table element (assuming it's the first table in this example)
$table = $xpath->query('//table')->item(0);

// Find the row(s) where you want to add new columns (e.g., the first row)
// $rows = $xpath->query('//tr[2]', $table);

// $rows = $xpath->query('//tr[position() = 1 or position() = 2 or position() = 3]', $table);
// $rows = $xpath->query('//tr', $table);
$rows = $xpath->query('//table//tr');

// Create and append new <td> elements (columns) to the selected row(s)
foreach ($rows as $row) {

    $newColumn = $doc->createElement('td');
    $newColumn->textContent = 'New Column 1';
    $row->appendChild($newColumn);

    $newColumn = $doc->createElement('td');
    $newColumn->textContent = 'New Column 2';
    $row->appendChild($newColumn);

    $newColumn = $doc->createElement('td');
    $newColumn->textContent = 'New Column 3';
    $row->appendChild($newColumn);

   
}

// Save or display the modified HTML
echo $doc->saveHTML();
?>