PHP source code: How to build a site to implement a login page-PHP Tutorial-php.cn

PHP source code: How to build a site to implement a login page

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Release： 2023-04-02 10:58:01

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This article mainly introduces the method of building a site to implement the login page with PHP source code. It has a certain reference value. Now I share it with you. Friends in need can refer to it

Main:

SiteBuilding
Implement login page
Analysis and improvement

Site construction

1) In the apache installation directory: [conf\extra\httpd-vhosts.conf] Add site configuration

 1 <VirtualHost *:80> 
 2     #站点根目录 
 3     DocumentRoot "D:\htdocs\Demo" 
 4       #站点绑定的域名 
 5     ServerName www.test.com 
 6      #站点别名 
 7     ServerAlias test.com 
 8   <Directory  "D:\htdocs\Demo"> 
 9         #允许所有访问
 10         #allow from all
 11         Require all granted
 12         #允许分布式权限配置(允许重写)（.htacess）
 13         AllowOverride All
 14         #不显示站点目录的文件结构
 15         Options -indexes
 16   </Directory>
 17 </VirtualHost>

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2) Add domain name resolution to the host file. Host file location: [C:\Windows\System32\drivers\etc\hosts]

1 127.0.0.1 www.test.com  test.com

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3) Restart apache. Complete site configuration.

Implement the login page

1) Create the project directory blog [D:\htdocs\Demo\blog], initialize git, and submit to Code Cloud

Right click in the project directory》Git Bash Prerequisite: git

1  git init 
2  git remote add origin  
3  git pull origin master

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2) User data tablepbg_users

 1 CREATE TABLE `pbg_users` ( 
 2   `id` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT &#39;用户主键&#39;, 
 3   `username` varchar(20) NOT NULL COMMENT &#39;用户名&#39;, 
 4   `pwd` char(32) NOT NULL COMMENT &#39;密码&#39;, 
 5   `email` varchar(50) NOT NULL DEFAULT &#39;&#39; COMMENT &#39;注册邮箱&#39;, 
 6   `token_email` varchar(32) NOT NULL DEFAULT &#39;&#39; COMMENT &#39;邮箱验证&#39;, 
 7   `flag` tinyint(1) unsigned NOT NULL DEFAULT &#39;0&#39; COMMENT &#39;是否是管理员，1-管理员，2-普通用户&#39;, 
 8   `created_at` datetime DEFAULT NULL COMMENT &#39;注册时间&#39;, 
 9   `updated_at` datetime DEFAULT NULL COMMENT &#39;最后一次登录时间&#39;,
 10   `login_ip` varchar(20) NOT NULL DEFAULT &#39;&#39; COMMENT &#39;最后登录的ip地址&#39;,
 11   `login_times` smallint(6) NOT NULL DEFAULT &#39;0&#39; COMMENT &#39;登录次数&#39;,
 12   PRIMARY KEY (`id`),
 13   UNIQUE KEY `username` (`username`),
 14   UNIQUE KEY `email` (`email`)
 15 ) ENGINE=MyISAM AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

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3) Log in Interface [login.html]

 1 <!DOCTYPE html> 
 2 <html lang="zh-CN"> 
 3 <head> 
 4     <meta charset="UTF-8"> 
 5     <title>登录</title> 
 6     <link rel="stylesheet" type="text/css" href="layui/css/layui.css"> 
 7     <link rel="stylesheet" type="text/css" href="css/style.css"> 
 8 </head> 
 9 <body>
 10 <p class="container">
 11     <p class="content">
 12         <form action="login.php" class="layui-form" method="post">
 13             <p class="layui-form-item">
 14                 <h2>登录</h2>
 15             </p><hr>
 16 
 17             <p class="layui-form-item">
 18                 <label class="layui-form-label">用户名:</label>
 19                 <p class="layui-input-block">
 20                     <input type="text" name="username" class="layui-input" required  lay-verify="required"  placeholder="请输入用户名" autocomplete="off" >
 21                 </p>
 22             </p>
 23 
 24             <p class="layui-form-item">
 25                 <label class="layui-form-label">密   码:</label>
 26                 <p class="layui-input-block">
 27                     <input type="password" name="pwd" required lay-verify="required" placeholder="请输入密码"  class="layui-input">
 28                 </p>
 29             </p>
 30 
 31             <p class="layui-form-item">
 32                 <p class="layui-input-block">
 33                     <button  lay-submit class="layui-btn">登录</button>
 34                     <button type="reset" class="layui-btn layui-btn-primary">重置</button>
 35                 </p>
 36             </p>
 37         </form>
 38     </p>
 39 </p>
 40 <script type="text/javascript" src="layui/layui.js"></script>
 41 <script>
 42     layui.use(&#39;form&#39;, function(){
 43         var form = layui.form;
 44     });
 45 </script>
 46 </body>
 47 </html>

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4) Login page style adjustment [css/style.css]

 1 @charset "UTF-8"; 
 2  
 3 body { 
 4     background-color: #1E9FFF; 
 5 } 
 6  
 7 /*登录*/
 8 .container { 
 9     position: absolute;
 10     left: 50%;
 11     top:50%;
 12     width: 500px;
 13     margin-left: -250px;
 14     margin-top: -200px;"
 15 }
 16 .content{
 17     background: #ffffff;
 18     padding: 20px;
 19     border-radius: 4px;
 20     box-shadow: 5px 5px 50px #444444;
 21 }

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View style sheet

5) Login operation: Process login information [login.php]

 1 <?php 
 2 /** 
 3  * 登录数据处理 
 4  * User: young 
 5  */ 
 6 header("content-type:text/html;charset=utf-8"); 
 7 //1-接收登录信息 
 8 $data = array(); 
 9 $data[&#39;username&#39;] = trim($_POST[&#39;username&#39;]);
 10 $data[&#39;pwd&#39;] = trim($_POST[&#39;pwd&#39;]);
 11 
 12 //2-连接数据库
 13 $conn = @mysql_connect(&#39;localhost&#39;,&#39;root&#39;,&#39;root&#39;) or die(&#39;连接数据库失败!&#39;);
 14 // mysql_set_charset("utf8");
 15 // mysql_select_db("web");
 16 mysql_query(&#39;set names utf8&#39;,$conn);
 17 mysql_query(&#39;use web&#39;,$conn);
 18 
 19 //3-查询数据库  校验登录信息
 20 $sql = "select username,pwd from pbg_users where username=&#39;{$data[&#39;username&#39;]}&#39;";
 21 $res = mysql_query($sql,$conn);
 22 
 23 //4-登录结果提示信息
 24 if($res != false){
 25     $user = mysql_fetch_array($res);
 26     if( $user[&#39;pwd&#39;] == md5($data[&#39;pwd&#39;]) ){ exit(&#39;登录成功&#39;); }
 27 }
 28 echo "用户名或密码不正确!";
 29 header(&#39;refresh:3; url=login.html&#39;);

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Click to view

6) Login interface effect

PHP source code: How to build a site to implement a login page

Analysis and improvement

1) Prepare to optimize the

file directory structure and implement the MVC structure
access form : Implement single-entry file access

2) Submit code:

1 git add -A
2 git commit -m "第一次提交 && 登录页"
3 git push origin master

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View the source code of this project: https://gitee.com/NewbiesYang/young_blog

Summary: The main completions this time are:

1. Site configuration

2. Login data table and login page production, simple implementation of login logic

3. Next step optimization Improvement

The above is the entire content of this article. I hope it will be helpful to everyone's learning. For more related content, please pay attention to the PHP Chinese website!

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