servnest/pg-act/ns/cname.php

<?php declare(strict_types=1);

$values = nsParseCommonRequirements();

$_POST['cname'] = formatAbsoluteDomain($_POST['cname']);

rateLimit();

knotcZoneExec($_POST['zone'], [
	$values['domain'],
	$values['ttl'],
	'CNAME',
	$_POST['cname']
]);

output(200, _('Modification done.'));