Kohana debug::vars extension

public static function vars()
{
    if (func_num_args() === 0) return;
    $variables = func_get_args();

    $output = array();
    foreach ($variables as $var)
    {
        $backtrace = debug_backtrace();
        $path = $backtrace[0]['file'];
        $exploded_path = explode('\\', $path);
        $filename = end($exploded_path);
        $last_path_segment = prev($exploded_path);
        $line = $backtrace[0]['line'];
        $output[] = Debug::_dump($var, 1024).' ('.$last_path_segment.'/'.$filename.':'.$line.')';
    }

    return '<pre class="debug">'.implode("\n", $output).'</pre>';
}