yii登陆中添加验证码

1、在SiteController中添加如下代码：

/**
 * Declares class-based actions.
 */
public function actions() {
    return array(
        // captcha action renders the CAPTCHA image displayed on the contact page
        'captcha' => array(
            'class' => 'CCaptchaAction',
            'backColor' => 0xFFFFFF,
        ),
        // page action renders "static" pages stored under 'protected/views/site/pages'
        // They can be accessed via: index.php?r=site/page&view=FileName
        'page' => array(
            'class' => 'CViewAction',
        ),
    );
}

2、在 Model/LoginForm.php中

           添加一个属性： public $verifyCode;

           在rules数组最后添加：array('verifyCode', 'captcha', 'allowEmpty'=>!CCaptcha::checkRequirements()),

3、在视图中，在view/login.php中需要添加验证码的地方写上：

<input id='LoginForm_verifyCode' type="text" name="LoginForm[verifyCode]" >

  

<?php $this->widget('CCaptcha'); ?> 

// 下面这个可以点击图片进行换验证码

 <div><?php $this->widget('CCaptcha',array('showRefreshButton'=>false,'clickableImage'=>true,'imageOptions'=>array('alt'=>'点击换图','title'=>'点击换图','style'=>'cursor:pointer'))); ?></div>