ECshop中驗證碼的使用

ECshop中驗證碼的調用

<input type="text" size="8" name="captcha" class="inputBg" />
<img src="captcha.php?{$rand}" alt="captcha" onClick="this.src='captcha.php?'+Math.random()" class="captcha">

驗證碼的驗證

if (empty($_POST['captcha']))
    {
     show_message($_LANG['order']['captcha_empty']);
    }

   
    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']);
    }
$GLOBALS['smarty']->assign('rand', mt_rand());

驗證碼防止灌水刷屏 

if ((intval($_CFG['captcha']) & CAPTCHA_MESSAGE) && gd_version() > 0)
    {
        include_once('includes/cls_captcha.php');
        $validator = new captcha();
        // 驗證驗證碼是否正確 
        if (!$validator->check_word($_POST['captcha']))
        {
            show_message($_LANG['invalid_captcha']);
        }
    }
    else
    {
        //沒有驗證碼時，用時間來限制機器人發帖或惡意發評論 
        if (!isset($_SESSION['send_time']))
        {
            $_SESSION['send_time'] = 0;
        }

        $cur_time = gmtime();
        if (($cur_time - $_SESSION['send_time']) < 30) // 小於30秒禁止發評論
        {
            show_message($_LANG['cmt_spam_warning']);
        }
    }