PHP parse HTML table -> Array

parseTable.php

<?php
$html= 'oluna da esquerda, usando o botão "Adicionar mídia" (tamanho Médio).</li>
 	<li>Digite a descrição na coluna da direita.</li>
</ol>
<table width="500">
<tbody>
<tr>
<td valign="top" width="200"> <img class="alignnone size-medium wp-image-38" src="http://localhost/adriano/wp-content/uploads/2017/05/SAM_0187-300x225.jpg" alt="" width="300" height="225" /></td>
<td valign="top">Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</td>
</tr>
<tr>
<td valign="top" width="200"> <img class="alignnone size-medium wp-image-38" src="http://localhost/adriano/wp-content/uploads/2017/05/SAM_0187-300x225.jpg" alt="" width="300" height="225" /></td>
<td valign="top">Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</td>
</tr>
<tr>
<td valign="top" width="200"> <img class="alignnone size-medium wp-image-38" src="http://localhost/adriano/wp-content/uploads/2017/05/SAM_0187-300x225.jpg" alt="" width="300" height="225" /></td>
<td valign="top">Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</td>
</tr>
<tr>
<td valign="top" width="200"></td>
<td valign="top"></td>
</tr>
<tr>
<td valign="top" width="200"></td>
<td valign="top"></td>
</tr>
<tr>
<td valign="top" width="200"></td>
<td valign="top"></td>
</tr>
<tr>
<td valign="top" width="200"></td>
<td valign="top"></td>
</tr>
<tr>
<td valign="top" width="200"></td>
<td valign="top"></td>
</tr>
<tr>
<td valign="top" width="200"></td>
<td valign="top"></td>
</tr>
<tr>
<td valign="top" width="200"></td>
<td valign="top"></td>
</tr>
<tr>
<td valign="top" width="200"></td>
<td valign="top"></td>
</tr>
<tr>
<td valign="top" width="200"></td>
<td valign="top"></td>
</tr>
</tbody>
</table>';

$dom = new DomDocument();
$dom->loadHTML( $html );
$xpath = new DOMXPath( $dom );

$content = array();
echo '<pre>';
foreach($xpath->query('//table//tr') as $tr)
{
    $td_pair = array();
    foreach ($tr->childNodes as $td)
    {
        $img = $xpath->query('./img', $td)->item(0); //get direct first child
        print_r($img->getAttribute('src')); // get the src
        //$td_pair[] = $td->nodeValue;
        $content[] = $td->nodeValue;
    }
    //$content[] = $td_pair;
}


echo '</pre>';
?>