<?php

/**
 * Class Qs_View_Helper_MaskCreditCard
 * @property Qs_View $view
 */
class Qs_View_Helper_MaskCreditCard extends Zend_View_Helper_Abstract
{
    public function maskCreditCard($number, $replacement = 'X')
    {
        $number = $this->view->formatCreditCard($number);
        $number = preg_replace('/[\d]/', $replacement, substr($number, 0, -4)) . substr($number, -4);
        return $number;
    }
}