JBZoo\Utils\Cli::err PHP Method

    public static function err($message, $addEol = true)
    {
        if ($addEol) {
            $message .= PHP_EOL;
        }
        if (defined('STDERR')) {
            fwrite(STDERR, $message);
        } else {
            echo $message;
        }
    }

 /**
  * Show messages only on php script die!
  */
 public function __destruct()
 {
     foreach ($this->_info as $message) {
         Cli::out($message, false);
     }
     foreach ($this->_error as $message) {
         Cli::err($message, false);
     }
 }