<?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'));

    }

}

<html>

<!DOCTYPE html>

<html lang="en" class="no-js">

<head>

    <meta charset="utf-8">

    <title>登录(Login)</title>

    <meta name="viewport" content="width=device-width, initial-scale=1.0">

    <meta name="description" content="">

    <meta name="author" content="">

    <!-- CSS -->

    <link rel="stylesheet" href="__PUBLIC__/admin/login/css/reset.css">

    <link rel="stylesheet" href="__PUBLIC__/admin/login/css/style.css">

    <!-- HTML5 shim, for IE6-8 support of HTML5 elements -->

    <!--[if lt IE 9]>

    <script src="__PUBLIC__/admin/login/js/html5.js"></script>

    <![endif]-->

</head>

<style>

    * { margin:0; padding:0; }

    body { background:#111; height:100%; }

    img { border:none; }

    #supersized-loader { position:absolute; top:50%; left:50%; z-index:0; width:60px; height:60px; margin:-30px 0 0 -30px; text-indent:-999em; background:url("__PUBLIC__/admin/login/img/progress.gif") no-repeat center center;}

    #supersized {  display:block; position:fixed; left:0; top:0; overflow:hidden; z-index:-999; height:100%; width:100%; }

    #supersized img { width:auto; height:auto; position:relative; display:none; outline:none; border:none; }

    #supersized.speed img { -ms-interpolation-mode:nearest-neighbor; image-rendering: -moz-crisp-edges; }	/*Speed*/

    #supersized.quality img { -ms-interpolation-mode:bicubic; image-rendering: optimizeQuality; }			/*Quality*/

    #supersized li { display:block; list-style:none; z-index:-30; position:fixed; overflow:hidden; top:0; left:0; width:100%; height:100%; background:#111; }

    #supersized a { width:100%; height:100%; display:block; }

    #supersized li.prevslide { z-index:-20; }

    #supersized li.activeslide { z-index:-10; }

    #supersized li.image-loading { background:#111 url("__PUBLIC__/admin/login/img/progress.gif") no-repeat center center; width:100%; height:100%; }

    #supersized li.image-loading img{ visibility:hidden; }

    #supersized li.prevslide img, #supersized li.activeslide img{ display:inline; }

    #supersized img { max-width: none !important }

</style>

<body>

<div class="page-container">

    <h1>梦起工作室后台登录(Login)</h1>

    <form action="{:U('Login/Check_Login')}" method="post">

        <input type="text" name="username" class="username" placeholder="请输入您的用户名！">

        <input type="password" name="password" class="password" placeholder="请输入您的用户密码！">

        <input type="Captcha" class="Captcha" name="Captcha" placeholder="请输入验证码！"><img src="{:U('Login/Verifys')}" width="120" height="43" name="verify" style="position: relative; top: 20px;" />

        <button type="submit" class="submit_button">登录</button>

        <div class="error"><span>+</span></div>

    </form>

</div>

<!-- Javascript -->

<script src="__PUBLIC__/admin/login/js/jquery-1.8.2.min.js" ></script>

<script src="__PUBLIC__/admin/login/js/supersized.3.2.7.min.js" ></script>

<script src="__PUBLIC__/admin/login/js/supersized-init.js" ></script>

<script src="__PUBLIC__/admin/login/js/scripts.js" ></script>

</body>

</html>