protected $_validate = array(
    // 驗(yàn)證用戶名是否合法
    array('username','require','用戶名不能為空！'),
    array('username','','該用戶名已被注冊(cè)',0,'unique'),
    array('username','/^[\w\-\x{4e00}-\x{9fa5}]{2,16}$/','用戶名不合法！',0,'regex'),
    // 驗(yàn)證郵箱是否合法
    array('email','require','電子郵箱不能為空！'),
    array('email','','該郵箱已被注冊(cè)',0,'unique'),
    array('email','email','電子郵箱格式不正確！',0,'regex'),
    // 驗(yàn)證密碼是否合法
    array('password','require','密碼不能為空！'),
    array('password','/^[\S]{6,32}$/','密碼格式不正確！',0,'regex'),
);

public function register(){
    if(IS_POST){
        $user = D('User');
        if(!$user->create()){
            $this->ajaxReturn(array('status'=>0,'msg'=>$user->getError()));
        }else{
            $user->add();
            $this->ajaxReturn(array('status'=>1,'msg'=>'注冊(cè)成功！'));
        }
    }
}

public function update(){
    if(IS_POST){
        $user = D('User');
        $data = array(
            'id' => $_POST['id'],
            'username' => $_POST['username'],
            'email' => $_POST['email'],
        );
        if(!$user->create($data, 2)){
            $this->ajaxReturn(array('status'=>0,'msg'=>$user->getError()));
        }else{
            $user->save();
            $this->ajaxReturn(array('status'=>1,'msg'=>'更新成功！'));
        }
    }
}