Override Media.php to keep some files in header

Media.php

<?php
Class Media extends MediaCore
{

	public static function deferScript($matches)
	{
		if (!is_array($matches))
			return false;
		$inline = '';

		if (isset($matches[0]))
			$original = trim($matches[0]);

		if (isset($matches[1]))
			$inline = trim($matches[1]);
		// prestarocket
		/* This is an inline script, add its content to inline scripts stack then remove it from content */
		if (!empty($inline) && preg_match('/<\s*script(?!.*data-keepinline)[^>]*>/ims', $original) !== 0 && Media::$inline_script[] = $inline)
			return '';
		//end prestarocket
		/* This is an external script, if it already belongs to js_files then remove it from content */
		preg_match('/src\s*=\s*["\']?([^"\']*)[^>]/ims', $original, $results);
		if (array_key_exists(1, $results))
		{
			if (substr($results[1], 0, 2) == '//')
			{
				$protocol_link = Tools::getCurrentUrlProtocolPrefix();
				$results[1] = $protocol_link.ltrim($results[1], '/');
			}
			if (in_array($results[1], Context::getContext()->controller->js_files) || in_array($results[1], Media::$inline_script_src))
				return '';
		}

		/* return original string because no match was found */
		return $original;
	}
}

Thank You :)

Actually this script didn't work for me. I found this one to work.
https://gist.github.com/hereswhatidid/8c8edef106ee95138b03