<?php
$html = <<<EOT
<div>
<p>Hello World</p>
<!--
<table class="123456789132456789123456789123456789123456789">
<tr class="">
<!--<td></td>-->
<!--<td></td>-->
<td class="123456789123456789123456789123456789123456789">FooBar</td>
</tr>
</table>
-->
</div>
EOT;
do {
$html = preg_replace("/<!--(?(?!<!--).)*-->/sU", '', $html, -1, $count);
} while ($count);
echo $html;
- Output for 5.5.0 - 5.5.36, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- <div>
<p>Hello World</p>
</div>
preferences:
158.69 ms | 404 KiB | 241 Q