* * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * @link http://www.phpinsider.com/php/code/SmartyValidate/ * @copyright 2001-2005 New Digital Group, Inc. * @author Monte Ohrt * @package SmartyValidate */ /** * test if a value is a valid credit card expiration date * * @param string $value the value being tested * @param boolean $empty if field can be empty * @param array params validate parameter values * @param array formvars form var values */ function smarty_validate_criteria_isCCExpDate($value, $empty, &$params, &$formvars) { if(strlen($value) == 0) return $empty; if(!preg_match('!^(\d+)\D+(\d+)$!', $value, $_match)) return false; $_month = $_match[1]; $_year = $_match[2]; if(strlen($_year) == 2) $_year = substr(date('Y', time()),0,2) . $_year; $_month = (int) $_month; $_year = (int) $_year; if($_month < 1 || $_month > 12) return false; if(date('Y',time()) > $_year) return false; if(date('Y',time()) == $_year && date('m', time()) > $_month) return false; return true; } ?>