WordPress Child Theme Cache Buster

functions.php

define('DSK_VERSION', '1.1.4');
$cache_buster = DSK_VERSION;
if ( defined( 'WP_DEBUG' ) && WP_DEBUG) {
  $cache_buster = date("YmdHi", filemtime( get_stylesheet_directory() . '/css/main.css'));
}
function my_scripts_and_styles(){
  global $cache_buster;
	wp_enqueue_style( 'main-style', get_stylesheet_directory_uri() . '/css/main.css', array( 'woodmart-style' ), $cache_buster, 'all' );

}
add_action( 'wp_enqueue_scripts', 'my_scripts_and_styles', 99999);