Yii使用Captcha驗證碼的方法

2020-03-22 17:58:31

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本文實例講述了Yii使用Captcha驗證碼的方法。分享給大家供大家參考，具體如下：詳細代碼可參考:yii自帶的示例代碼post項目，里面有一個contact表單用到了驗證碼. 1. Model: 將驗證碼加入UserLogin的一個屬性: html' target='_blank'>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', 'required'), // rememberMe needs to be a boolean array('rememberMe', 'boolean'), // 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( 'rememberMe'= 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控制器加入映射動作CCaptchaAction public function actions() return array( // captcha action renders the CAPTCHA image displayed on the contact page 'captcha'= array( 'class'= 'CCaptchaAction', 'backColor'= 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']; //在此核對驗證碼 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 {//提示錯誤 $model- addError('verifyCode','驗證碼不對'); // display the login form $this- render('/user/login',array('model'= $model)); } else $this- redirect(Yii::app()- controller- module- returnUrl); 在驗證用戶名密碼前，檢查驗證碼： if($this- createAction('captcha')- validate($model- verifyCode, false)) 3. view 在視圖中顯示驗證碼圖片,輸入框 php $this- widget('CCaptcha'); php echo CHtml::activeTextField($model,'verifyCode',array('tabindex'= img src="http://www.XXXX.net/uploads/123456.jpg" alt="" 希望本文所述對大家基于Yii框架的PHP程序設計有所幫助。PHP教程

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