yii 驗證碼不顯示圖片怎么辦？

yii2中驗證碼的使用-圖片不顯示

推薦學(xué)習(xí)：yii框架

1.控制器中

public function actions()     {         return [             'captcha' => [                 'class' => 'yiicaptchaCaptchaAction',                 'fixedVerifyCode' => YII_ENV_TEST ? 'testme' : null,             ],         ];     }

2.模型中

要有一個驗證碼的字段$verifyCode

3.視圖中

use yiihelpersHtml; use yiiwidgetsActiveForm; use yiicaptchaCaptcha;

自動生成表單

頁面中驗證碼代碼

<?= $form->field($model, 'verifyCode')->widget(Captcha::className(), [                     'template' => '<div class="row"><div class="col-lg-3">{image}</div><div class="col-lg-6">{input}</div></div>', ]) ?>

控制器中的權(quán)限可能導(dǎo)致驗證碼圖片不顯示，

public function behaviors()

{

return [

'access' => [

'class' => AccessControl::className(),

'only' => ['logout', 'signup','login'],

'rules' => [

[

'actions' => ['signup'],

'allow' => true,

'roles' => ['?'],

],

[

'actions' => ['logout'],

'allow' => true,

'roles' => ['@'],

],

],

],

'verbs' => [

'class' => VerbFilter::className(),

'actions' => [

'logout' => ['post'],

],

],

];

}

控制器中紅線部分缺少則導(dǎo)致驗證碼不顯示。