Adding Nodes to the DOM

The parser allows you to add new elements to an existing document. Find below an example for that.

Remarks

It is not possible to create nodes via ->outertext, ->innertext, or ->plaintext. These properties only change the text representation of a node and will return undesired results if used incorrectly.
Use $html->createElement and $html->createTextNode to create new nodes.
Use $node->appendChild to add a node as child to another node.
Nodes can be combined in any order.

Example

<?php

// This example illustrates adding new elements to the DOM.

require_once 'simple_html_dom.php';

/***************************** table data *************************************/

$header = array('Ocean', 'Volume (km^3)');

$data = array(
    array('Arctic Ocean', 18750000),
    array('Atlantic Ocean', 310410900),
    array('Indian Ocean', 264000000),
    array('Pacific Ocean', 660000000),
    array('Souce China Sea', 9880000),
    array('Southern Ocean', 71800000)
);

/***************************** template ***************************************/

$doc = <<<EOD
<html>
<head>
    <style>
table { border: 1px solid black; }

tr:nth-child(even)  { background: #CCC }
tr:nth-child(odd)   { background: #FFF }
    </style>
</head>
<body>
    <h1>Volumes of the World's Oceans</h1>
</body>
</html>
EOD;

/***************************** code *******************************************/

$html = str_get_html($doc);
$body = $html->find('body', 0);
$table = $html->createElement('table');

// Header row
$tr = $html->createElement('tr');
foreach ($header as $entry) {
    $th = $html->createElement('th', $entry);
    $tr->appendChild($th);
}
$table->appendChild($tr);

// Table data
foreach ($data as $row) {
    $tr = $html->createElement('tr');
    foreach ($row as $entry) {

        // (optional) Add info to the volume column
        if (is_numeric($entry)) {
            $value = number_format($entry);
            $td = $html->createElement('td', $value);
            $td->setAttribute('volume', $entry);
        } else {
            $td = $html->createElement('td', $entry);
        }

        $tr->appendChild($td);
    }
    $table->appendChild($tr);
}

$body->appendChild($table);

echo $html . PHP_EOL;

/**
 * Output (beautified)
 *
 * <html>
 * <head>
 *   <style>
 *     table { border: 1px solid black; }
 *     tr:nth-child(even)  { background: #CCC }
 *     tr:nth-child(odd)   { background: #FFF }
 *   </style>
 * </head>
 * <body>
 *   <h1>Volumes of the World's Oceans</h1>
 *   <table>
 *     <tr><th>Ocean</th><th>Volume (km^3)</th></tr>
 *     <tr><td>Arctic Ocean</td><td volume="18750000">18,750,000</td></tr>
 *     <tr><td>Atlantic Ocean</td><td volume="310410900">310,410,900</td></tr>
 *     <tr><td>Indian Ocean</td><td volume="264000000">264,000,000</td></tr>
 *     <tr><td>Pacific Ocean</td><td volume="660000000">660,000,000</td></tr>
 *     <tr><td>Souce China Sea</td><td volume="9880000">9,880,000</td></tr>
 *     <tr><td>Southern Ocean</td><td volume="71800000">71,800,000</td></tr>
 *   </table>
 * </body>
 * </html>
 */