Easy way of removing new lines in every attribute of an object - with closures in PHP 5.3

arrayWalkUsingClosure.php

<?php

class Operation
{
  public $dateOperation;
  public $datePosting;
  public $type;
  public $description;
  public $priceOriginalCurrency;
  public $pricePln;

  public function removeNewLines()
  {
    array_walk($this, function(&$value) {
      $value = str_replace("\n", "", $value);
    }); 
  }
}