ecshop 登录验证码的调用

/**判断系统是否启用验证码*/

$captcha = intval($_CFG['captcha']);    
if (($captcha & CAPTCHA_LOGIN) && (!($captcha & CAPTCHA_LOGIN_FAIL) || (($captcha & CAPTCHA_LOGIN_FAIL) && $_SESSION['login_fail'] > 2)) && gd_version() > 0)
    {//如果系统启用了登录验证码，则给模板传一个已启用变量$enabled_captcha=1
        $GLOBALS['smarty']->assign('enabled_captcha', 1);
        $GLOBALS['smarty']->assign('rand', mt_rand());
    }

 

/**验证码验证*/

 $captcha = intval($_CFG['captcha']);
 if (($captcha & CAPTCHA_LOGIN) && (!($captcha & CAPTCHA_LOGIN_FAIL) || (($captcha & CAPTCHA_LOGIN_FAIL) && $_SESSION['login_fail'] > 2)) && gd_version() > 0)
    {
        if (empty($_POST['captcha']))
        {
            show_message($_LANG['invalid_captcha'], $_LANG['relogin_lnk'], 'user.php', 'error');
        }

        /* 开始检查验证码 */
        include_once('includes/cls_captcha.php');

        $validator = new captcha();
        $validator->session_word = 'captcha_login';
        if (!$validator->check_word($_POST['captcha']))
        {
            show_message($_LANG['invalid_captcha'], $_LANG['relogin_lnk'], 'user.php', 'error');
        }
    }