yii自带验证码，解决刷新页面验证码不刷新问题

来源：互联网发布：知乎北上广深编辑：程序博客网时间：2024/05/01 15:40

一：打开文件 /framework/web/widgets/captcha/CCaptchaAction.php

添加全局变量public $toRefresh=false;

修改run方法，增加红色部分代码

    public function run()
   {
       if(isset($_GET[self::REFRESH_GET_VAR])) // AJAX request for regenerating code
       {
           $code=$this->getVerifyCode(true);
           echo CJSON::encode(array(
               'hash1'=>$this->generateValidationHash($code),
               'hash2'=>$this->generateValidationHash(strtolower($code)),
               // we add a random 'v' parameter so that FireFox can refresh the image
               // when src attribute of image tag is changed
               'url'=>$this->getController()->createUrl($this->getId(),array('v' => uniqid())),
           ));
       }elseif($this->toRefresh){
              $code=$this->getVerifyCode(true);
              $this->renderImage($code);
             }
       else
           $this->renderImage($this->getVerifyCode());
       Yii::app()->end();
   }

二：控制器增加下面红色代码

public function actions()
{
    return array(
      //验证码
      'captcha'=>array(
        'class'=>'CCaptchaAction',
        'backColor'=>0xFFFFFF,
        'maxLength'=>4,
        'minLength'=>4,
        'width'=>80,
        'height'=>36,
        'toRefresh' => true,//页面刷新自动更新验证码
      ),
    );
}

结束！

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