Kohana Captcha模块

Question

我正尝试在Kohana3.3项目中使用kohana-captcha module。在验证之前，一切都很正常。

下面是我的代码示例：

<?php defined('SYSPATH') or die('No direct script access.');

class Controller_User extends Controller_Template {

    public $template = "template";

    public function action_create()
    {
            if (isset($_POST['captcha']))
            {
                print $_POST['captcha'];
                print ">>>".Captcha::valid($_POST['captcha'])."<<<";
            }

            $captcha = Captcha::instance();

            $this->template->content = View::factory('user/create')
                ->bind('captcha', $captcha);
    }
}

?>

查看代码：

<form method="post" action="/user/create/" class="form-horizontal" id="form">
    <div class="control-group">
        <label class="control-label" for="inputCaptcha">
            <?=$captcha?>
        </label>
        <div class="controls">
          <input type="text" id="inputCaptcha" placeholder="Код с картинки" name="captcha">
          <span class="help-inline"></span>
        </div>
    </div>    
</form>

$_SESSION and $_COOKIE数组也是空的。Captcha::valid($_POST['captcha'])什么也没给我看。

例如，我看到一个带有"KX5R“验证码的图像，这是print_r($captcha)的结果：

Captcha_Alpha Object ( [driver:protected] => [response:protected] => MWXF [image:protected] => [image_type:protected] => png )

有什么建议吗？

Answer 1

你应该检查你的验证码变量，在这里是‘POST’，是否等于验证码的实例。因此，您应该在验证Captcha时使用if语句之前初始化post对象。

如下所示：

$captcha = Captcha::instance();

$this->template->content = View::factory('user/create')
    ->set('captcha', $captcha);

if ($this->request->method() === Request::POST)
{
    if (Captcha::valid($_POST['captcha']))
        .. do something if captcha is OK
    else 
        ..do something if captcha is not OK 
}