' . "\n"; echo '' . "\n"; } } public function query_strings() { add_filter('script_loader_src', [$this, 'remove_parameter'], 9999); add_filter('style_loader_src', [$this, 'remove_parameter'], 9999); } public function remove_parameter($src) { if (is_admin() || empty($src)) { return $src; } return strpos($src, 'ver=') !== false ? remove_query_arg('ver', $src) : $src; } }