Add XHTML language

[Cain Nuke]

Hi,

I would like to add XHTML to my language list but I cant find it anywhere on the resources so I am fine with an alternative that can format this sort of code:

<?php
$template= <<<EOF
<button id=“openMenu” type=“button” class=“drawer-toggle drawer-hamburger”>
<span class=“sr-only”>toggle navigation</span>
<span class=“drawer-hamburger-icon”></span>
EOF;
?>

as you see, its html enclosed in php code so neither language can format it properly.

Thank you.