<?php
$html = <<< HTML
<table>
<tr>
<td>Name</td>
<td onclick="blahblah">Author</td>
<td>Title</td>
</tr>
</table>
HTML;
$dom = new DOMDocument;
$dom->loadHTML($html);
foreach ($dom->getElementsByTagName('td') as $td) {
if ($td->hasAttribute('onclick')) {
echo $td->getAttribute('onclick'), PHP_EOL;
}
echo $td->nodeValue, PHP_EOL;
}