yii实现创建验证码实例解析

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',
 ),
);

//captche class needed
array('verifyCode', 'captcha','allowEmpty'=>!CCaptcha::checkRequirements()),

public $verifyCode;

// verifyCode needs to be entered correctly
array('verifyCode', 'captcha', 'allowEmpty'=>!CCaptcha::checkRequirements()),

<div class="row">
<?php
echo $form->labelEx($model,'verifyCode');
?>
<?php
$this->widget('CCaptcha');
?>
<?php
echo $form->textField($model,'verifyCode');
?>
<?php
echo $form->error($model,'verifyCode');
?>
</div>