后端开发|php教程
Yii,Captcha,验证码,Yii验证码
后端开发-php教程
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详细代码可参考:yii自带的示例代码post项目，里面有一个contact表单用到了验证码.
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1. Model:
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将验证码加入UserLogin的一个属性:
class UserLogin extends CFormModel{ public $username; public $password; public $rememberMe; public $verifyCode; public function rules() { return array( // username and password are required array(username, password,verifyCode, equired), // rememberMe needs to be a boolean array( ememberMe, oolean), // password needs to be authenticated array(password, authenticate), // verifyCode needs to be entered correctly array(verifyCode, captcha, allowEmpty=>!CCaptcha::checkRequirements()), ); } /** * Declares attribute labels. */ public function attributeLabels() { return array( ememberMe=>Yii::t(user,"Remember me next time"), username=>Yii::t(user,"username or email"), password=>Yii::t(user,"password"), verifyCode=>Yii::t(user,Verification Code), ); }}
2. Controller
在LoginController控制器加入映射动作CCaptchaAction
public function actions(){ return array( // captcha action renders the CAPTCHA image displayed on the contact page captcha=>array( class=>CCaptchaAction, ackColor=>0xf4f4f4, padding=>0, height=>30, maxLength=>4, ), );}ublic function actionLogin(){ if (Yii::app()->user->isGuest) { $model=new UserLogin; // collect user input data if(isset($_POST[UserLogin])) { $model->attributes=$_POST[UserLogin];//在此核对验证码 if($this->createAction(captcha)->validate($model->verifyCode, false)) { // validate user input and redirect to previous page if valid if($model->validate()) { //admin login only if( Yii::app()->getModule(user)->isAdmin()==1 ) { $this->lastViset(); if (strpos(Yii::app()->user->returnUrl,/index.php)!==false)$this->redirect(Yii::app()->controller->module->returnUrl); else$this->redirect(Yii::app()->user->returnUrl); }else {//if no admin when login out$this->redirect(Yii::app()->controller->module->logoutUrl); } } }else {//提示错误 $model->addError(verifyCode,验证码不对); } } // display the login form $this->render(/user/login,array(model=>$model)); } else $this->redirect(Yii::app()->controller->module->returnUrl);}
在验证用户名密码前，检查验证码：
if($this->createAction(captcha)->validate($model->verifyCode, false)){
3. view
在视图中显示验证码图片,输入框
widget(CCaptcha); ?> 1)); ?>
