Thinkphp3.2 cms之登陆模块

<?php
/**
 * Created by dreamcms.
 * User: Administrator
 * Date: 2016/9/5
 * Time: 17:15
 */

namespace Admin\Controller;
use Think\Controller;

class LoginController extends  CommonController{

    //视图显示
    public function Login(){
        $this->display();
    }

    /**
     * 登录验证
     */
    public  function Check_Login(){
        //验证码检测
       $names=$_POST['Captcha'];
        if($this->check_verify($names)==false){
            $data['error']=1;
            $data['msg']="验证码错误";
            $this->ajaxReturn($data);
        }
        //用户检测
        $uname=I('post.username');
        $upasswd=I('post.password');
        $map['uname']=$uname;
        $map['state']=1;
        $logins=M('login')->where($map)->find();
        if($logins)
        {
            if($logins['upasswd']!=$upasswd)
            {
                $data['error']=1;
                $data['msg']="密码错误";
                $this->ajaxReturn($data);
            }
            session("admin",$logins);

            var_dump($logins);
           redirect(U('Index/index'));
        }

    }

    /**
     * 验证码生成
     */
    public  function Verifys()
    {
        $config=array(
            'fontSzie'=>30, //验证码字体大小
            'length'=>4,//验证码位数
            'useImgBg'=>true

        );

        $verify=new \Think\Verify($config);
        $verify->useZh=true;

        $verify->zhSet="梦起软件工作室";
        $verify->fontttf='simhei.ttf';
        $verify->entry();

    }

    /**
     * 验证码检测
     */
    public  function check_verify($code,$id="")
    {
        $verify=new \Think\Verify();
        return $verify->check($code,$id);
    }
    /**
     * 退出登录
     */
    public  function out_login(){
        session("admin",null);
        redirect(U('Login/login'));
    }
}