ZoomX smarty modifier to format phone number

modifier.phone.php

<?php

/*
 * Smarty plugin
 * -------------------------------------------------------------
 * File: modifier.phone.php
 * Type: modifier
 * Name: phone
 * Description: Format phone number.
 * -------------------------------------------------------------
 */
function smarty_modifier_phone($phone)
{
  return preg_replace('/^\+(\d)(\d{3})(\d{3})(\d{2})(\d{2})$/', '8 (\2) \3-\4-\5', $phone);
}