1）使用控制器来控制
views:
<tr>
<td width="100"><?php echo $form->textField($model, 'captcha', array('class' => 'input_s', 'style' => 'width:80px')); ?></td>
<td width="110"><img id="captcha_img" src="<?php echo $this->createUrl('captcha/getPic') . '?' . rand(0, 99); ?>" style="cursor: pointer" title="看不清楚,点击换一张验证码" alt="验证码" onclick="change_captcha();" /></td>
<td><a href="javascript:void(0);" style=" font-family:'宋体'; font-size:12px; color:#0065A9" onclick="change_captcha();">换一张</a></td>
</tr>
点击换一张的js：
function change_captcha(){
$('#captcha_img').attr('src', "<?php echo $this->createUrl('captcha/getPic'); ?>?"+Math.floor(Math.random()*200+1));
$('#LoginForm_captcha').val('');
}
CaptchaController：
<?php
/**
* 验证码
*/
class CaptchaController extends CController {
public function actionGetPic(){
Yii::import("application.helpers.captcha.Captcha");
header("Content-type:image/png");
$captcha5 = new Captcha();
//@设置验证码宽度
$captcha5->setWidth(99);
//@设置验证码高度
$captcha5->setHeight(30);
//@设置字符个数
$captcha5->setTextNumber(4);
//@设置字符颜色
//$captcha5->setFontColor('#ff9900');
//@设置字号大小
//$captcha5->setFontSize(25);
//@设置字体
//$captcha5->setFontFamily('t1.ttf');
//@设置语言
//$captcha5->setTextLang('cn');
//@设置背景颜色
//$captcha5->setBgColor('#000000');
//@设置干扰点数量
$captcha5->setNoisePoint(100);
//@设置干扰线数量
//$captcha5->setNoiseLine(10);
//@设置是否扭曲
$captcha5->setDistortion(true);
//@设置是否显示边框
$captcha5->setShowBorder(false);
//输出验证码
$code = $captcha5->createImage();
Yii::app()->session['captchaCode'] = array(
'content' => $code, //验证码的内容
'time' => time() //验证码的使用时间
);
exit;
}
}
//注意这里要引入包
将验证码作为一个登陆模型的属性:
<?php
class LoginForm extends CFormModel {
public $email;
public $password;
public $captcha;
public $rememberMe = false;
public $userInfo;
public function rules() {
return array(
array('email, password, captcha', 'required', 'message' => '{attribute}不能为空'),
array('captcha', 'checkCaptcha'),
array('password', 'authenticate'),
);
}
public function checkCaptcha($attribute, $params) {
if (!$this->hasErrors()) {
$captcha = Yii::app()->session['captchaCode'];
if (!isset($captcha['time']) || $captcha['time'] + 300 < time()) {
$this->addError('captcha', '验证码过期。');
} else if (strtolower($captcha['content']) != strtolower($this->captcha)) {
$this->addError('captcha', '验证码错误。');
}
}
}
/**
* 登陆验证
* @param type $attribute
* @param type $params
*/
public function authenticate($attribute, $params) {
if (!$this->hasErrors()) {
$user = ComUser::model()->findByAttributes(array('email' => $this->email));
if ($user && $user->password == $user->hashPassword($this->password, $user->salt)) {
if ($user->status == 1) {
$this->userInfo = $user;
unset(Yii::app()->session['captchaCode']);
} else if ($user->status == 0) {
$this->addError('email', '用户暂未审核通过。');
} else {
$this->addError('email', '用户已被禁用。');
}
} else {
$this->addError('password', '账号或密码错误。');
}
}
}
public function attributeLabels() {
return array(
'email' => '用户名',
'password' => '密码',
'captcha' => '验证码',
'rememberMe' => '记住登陆'
);
}
}
2）.使用yii的验证码物件(参数可自己调试）：
1.把public $captcha加入管理员Model的一个属性
验证rule时：
array('username, password, captcha', 'required', 'on'=>'login'),
array('captcha', 'captcha', 'allowEmpty'=>!extension_loaded('gd'), 'on'=>'login'),
然后控制器实例化时要使用场景。
2.视图页面：
<dt>验证码</dt>
<dd> <?php echo $form->textField($model,'captcha', array('class'=>'input-password verify-code')); ?>
<?php $this->widget ( 'CCaptcha', array ('showRefreshButton' => true, 'clickableImage' => true, 'buttonType' => 'link', 'buttonLabel' => '换一张', 'imageOptions' => array ('alt' => '点击换图', 'align'=>'absmiddle' ) ) );?>
<?php echo $form->error($model,'captcha'); ?> </dd>
3.在控制器Controller.php
public function actions ()
{
return array ('captcha' => array ('class' => 'CCaptchaAction' , 'minLength' => 1 , 'maxLength' => 5 , 'backColor' => 0xFFFFFF , 'width' => 100 , 'height' => 40 ) );
}