cakephp会员注册及登录验证实例

一：首先数据库要有一张users表：

CREATE TABLE `users` (

`id` int(10) NOT NULL auto_increment,

`username` varchar(50) collate utf8_unicode_ci NOT NULL,

`password` varchar(50) collate utf8_unicode_ci NOT NULL,

PRIMARY KEY (`id`)

) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci AUTO_INCREMENT=4 ;

二 ：创建注册register视图:在目录app/view/users下创建文件register.ctp，编辑代码如下：

<h3>Please fill out the form below to register an account.</h3>

<?php

echo $form->create("User",array("action"=>"register"));//点击register后提交到users控制器里的action register方法处理

echo $form->input("username");

echo $form->input("password");//注意此处的字段要与数据库里的字段一致

?>

<?php

echo $form->end("register");

?>

三：在app/controller目录下创建users_controller.php文件，在app/model下创建user.php文件：

users_controller.php代码如下：

<?php

class UsersController extends AppController

{

var $name = "Users";

var $helper = array("Html","Form");

//会员注册功能模块

function register()

{

if (!empty($this->data))

{

//对会员注册的密码使用md5加密

$this->data['User']['password'] = md5($this->data['User']['password']);

if ($this->User->save($this->data))

{

$this->Session->setFlash('Your registration information was accepted.');

$this->redirect(array('action'=>'login'));

} else {

$this->Session->setFlash('There was a problem with your registration');

$this->redirect(array('action'=>'register'));

}

}

}

}

?>

user.php代码如下：

<?php

class User extends AppModel{

var $name = "User";

//此处是对各字段规则校验，如果需要了解的可参考我的博文：cakephp如何实现数据校验

var $validate = array(

'username'=>array(

array(

'rule'=>'notEmpty',

'message'=>'Username must not be empty!'

),

array(

'rule'=>'isUnique',

'message'=>'Username must be Unique!'

)

),

'password'=>array(

array(

'rule'=>'NotEmpty',

'message'=>'Password must not be empty!'

),

array(

'rule'=>array('minLength','8'),

'message'=>'password must be at least 8 characters!'

)

)

);

}

?>

Ok，至此，如果cakephp其它的设置正确，用户点击注册后即将在数据库表users生成一对应的用户并将密码用md5加密；注册成功后跳转至login.ctp页面即登录页面；

四：现在继续完成登录及验证用户功能的实现：

先在/app/view/users下创建login.ctp，代码如下：

<h3>Please login.</h3>

<?php echo $form->create('User', array('action' => 'login')); ?>

<?php

echo $form->input('username');

echo $form->input('password');

?>

<?php echo $form->end('Login');?>

修改users_controller.php如下：

<?php

class UsersController extends AppController

{

var $name = "Users";

var $helper = array("Html","Form");

function register()

{

if (!empty($this->data))

{

$this->data['User']['password'] = md5($this->data['User']['password']);

if ($this->User->save($this->data))

{

$this->Session->setFlash('Your registration information was accepted.');

$this->redirect(array('action'=>'login'));

} else {

$this->Session->setFlash('There was a problem with your registration');

$this->redirect(array('action'=>'register'));

}

}

}

function login()

{

if($this->data)

{

//根据login.ctp页面上用户输入的用户名查找users表看是否有对应的用户：

$results = $this->User->findByusername($this->data['User']['username']);

//如果用户名存在，核对login.ctp页面上用户输入的密码用md5加密后是否与users表中的密码一致:

if($results&&$results['User']['password'] == md5($this->data['User']['password']))

{

//用户名以及密码都正确，此时我们把用户名保存到session中，如果下次需要调用只需用$this->Session->read('user')

$this->Session->write('user',$this->data['User']['username']);

$this->redirect(array('action'=>'index'));

}

else

{

$this->Session->setFlash("Wrong username or password,please try again!");

$this->redirect(array('action'=>'login'));

}

}

}

}

?>

OK,至此登录页面及验证也完成，此文源于：http://my.oschina.net/adamboy