Auto clear cache php

First htaccess

    RewriteEngine On
    # When any change applied reload css and js
    RewriteRule ^(.*)\.[\d]{10}\.(css|js)$ $1.$2 [L]

//helper function
function auto_version($file) // its for when change applied clear cashe and reload
{
	if(strpos($file, '/') !== 0 || !file_exists($_SERVER['DOCUMENT_ROOT'] . $file))
		return $file;

	$mtime = filemtime($_SERVER['DOCUMENT_ROOT'] . $file);
	return preg_replace('{\\.([^./]+)$}', ".$mtime.\$1", $file);
}

//html
<link rel="stylesheet" href="{{ auto_version('frontend/style-black.css') }}">


Option 2
===
 <!--responsive css-->
    <link rel="stylesheet" type="text/css" href="{{ asset('assets/css/custom.css') . '?v=' . filemtime(base_path() . '/assets/css/custom.css')  }}">