This article mainly introduces the method of implementing single-entry MVC structure in PHP source code. It has certain reference value. Now I share it with you. Friends in need can refer to it.
Main:
MVC directory structure
Database tool class production
Create public model classes and public controller classes
--------------：--------------------------------------
blog
├─index.php 入口文件
├─Model 模型
│ └─UserModel.class.php 用户模型类
├─View 视图
│ └─login.html 登录表单页面
├─Controller 控制器
│ └─UserController.class.php 用户控制器
├─Frame 公共使用的类
│ ├─BaseModel.class.php 数据库连接类
│ ├─BaseController.class.php 控制器公共操作（设置编码，信息跳转）
│ └─Db.class.php 数据库操作工具类
└─Public 静态公共文件（js,css,images）
├─js/ js文件
├─css/ css样式文件
└─images img图片
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MVC directory structure
1) Preparation: Create branch
1 $ git checkout master2 $ git checkout -b "mvc-dbtools-base"
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2) Create directory structure:
MVC Directory: Model/ Controller/ View/
Static resource directory: Public/
3) Create the project entry file [index.php]
Copy the encoding of the original login.php header(...)
Introducing the created controller UserController and model UserModel
1 <?php
2 /**
3 * 入口文件
4 */
5 header("content-type:text/html;charset=utf-8");
6
7 require_once('Model/UserModel.class.php');
8 require_once 'Controller/UserController.class.php';
9
10 //实例化控制器
11 $userCtr = new UserController();
12
13 $a = !empty($_GET['a']) ? $_GET['a'] : 'login';
14
15 $userCtr -> $a();Copy after login
4) Create controller UserController 【Controller/UserController.class.php】
1 <?php
2 /**
3 * UserController.class.php 用户控制器
4 */
5
6 class UserController {
7 /**
8 * 展示登录界面
9 * @access public
10 */
11 public function login()
12 {
13 include "View/login.html";
14 }
15
16 /**
17 * 登录操作： 校验登录信息
18 */
19 public function dlogin()
20 {
21 //接收登录信息
22 $data = array();
23 $data['username'] = trim($_POST['username']);
24 $data['pwd'] = trim($_POST['pwd']);
25
26 //实例化模型，调用模型方法，校验用户名和密码
27 $model = new UserModel();
28 $result = $model->checkLoginInfo($data);
29
30 //结果提示信息
31 if($result){
32 exit('登录成功');
33 } else {
34 echo "用户名或密码不正确!";
35 header('refresh:3; url=?');
36 }
37 }
38 }Copy after login
5) Create user model class UserModel [Model/UserModel.class.php]
Implementation method: checkLoginInfo() Check user name and password
<?php/**
* UserModel.class.php
* 用户模型类-操作表pbg_users */class UserModel
{ /**
* 检验登录信息
* @param array $data 用户提交的登录信息
* @return bool
true-校验成功 false-校验失败 */
public function checkLoginInfo($data)
{ //连接数据库
$conn = @mysql_connect('localhost','root','root') or die('连接数据库失败!');
mysql_query('set names utf8',$conn);
mysql_query('use web',$conn); //查询数据库
$sql = "select username,pwd from pbg_users where username='{$data['username']}'";
$res = mysql_query($sql,$conn); //登录结果提示信息
if($res !== false){
$user = mysql_fetch_array($res);
if( $user['pwd'] == md5($data['pwd']) ){
return true;
}
} return false;
}
}Copy after login
View user model class
6) Login view: [view/login.html]
Modification of the introduction path,
Modification of the form submission action: action=?a=dlogin
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="public/layui/css/layui.css">
7 <link rel="stylesheet" type="text/css" href="public/css/style.css">
8 </head>
9 <body>
10 <p class="container">
11 <p class="content">
12 <form action="?a=dlogin" 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="public/layui/layui.js"></script>41 <script>
42 layui.use('form', function(){43 var form = layui.form;44 });45 </script>46 </body>47 </html>Copy after login
Click to view the login view source code
Database connection operations are all in the model and can be extracted to create database operation tool classes
Database tool class production
Database connection, set encoding, select database
Implement singleton
Get one row of data getOneRow, get a single array getOneData, get multiple rows getAllRows, add, delete, modify exec
Automatically generate insert or update statements autoExecute()
[Frame/Db.class.php]
1 <?php
2 /**
3 * Db.class.php 数据库操作工具类
4 * @author young
5 */
6
7 class Db
8 {
9 private $host; //主机
10 private $user; //用户名
11 private $pwd; //密码
12 private $port; //端口
13 private $charset; //编码
14 private $dbname; //数据库
15
16 private $link=null; //存储数据库资源
17 private static $instance=null; //存储本类实例对象
18
19 /**
20 * 构造方法： 保存数据库连接信息，连接数据库
21 * @access private
22 * @param array $conf 数据库连接信息
23 */
24 private function __construct($conf)
25 {
26 $this->host = !empty($conf['host']) ? $conf['host'] : 'localhost';
27 $this->user = !empty($conf['user']) ? $conf['user'] : 'root';
28 $this->pwd = !empty($conf['pwd']) ? $conf['pwd'] : 'root';
29 $this->port = !empty($conf['port']) ? $conf['port'] : '3306';
30 $this->charset = !empty($conf['charset']) ? $conf['charset'] : 'utf8';
31 $this->dbname = !empty($conf['dbname']) ? $conf['dbname'] : 'web';
32
33 $this->connect();
34 }
35
36 /**
37 * 连接数据库，设置编码，选库
38 * @access private
39 */
40 private function connect()
41 {
42 $this->link = @ mysql_connect("{$this->host}:{$this->port}", "$this->user", "$this->pwd") or die('连接失败!'.mysql_error());
43 $this->setCharset($this->charset);
44 $this->useDb($this->dbname);
45 }
46 /**
47 * 设置字符便
48 * @access public
49 * @param string $char 字符编码
50 */
51 public function setCharset($char)
52 {
53 $this->query("set names $char");
54 }
55 /**
56 * 选择数据库
57 * @access public
58 * @param string $dbname 数据库名称
59 */
60 public function useDb($dbname)
61 {
62 $this->query("use $dbname");
63 }
64
65 /**
66 * 执行sql语句
67 * @param string $sql sql语句
68 * @return mixed
69 */
70 private function query($sql)
71 {
72 $result = mysql_query($sql, $this->link);
73 if(false === $result) {
74 echo "<p>sql执行失败!<br>";
75 echo "<br>失败语句：".$sql;
76 echo "<br>错误代号".mysql_errno();
77 echo "<br>错误提示: ".mysql_error()."</p>";
78 exit();
79 }
80 return $result;
81 }
82
83 /**
84 * 获取本类实例
85 * @access public
86 * @param array $conf 数据库连接信息
87 * @return object 本类的单例对象
88 */
89 public static function getDb($conf)
90 {
91 if(false === (static::$instance instanceof static)){
92 static::$instance = new static($conf);
93 }
94 return static::$instance;
95 }
96 /**
97 * 禁止克隆
98 */
99 public function __clone()
100 {
101
102 }
103 /**
104 * 关闭数据库连接
105 * @access public
106 */
107 public function closeDb()
108 {
109 mysql_close($this->link);
110 }
111
112 public function exec($sql)
113 {
114 $result = $this->query($sql);
115 return $this->affectedRows();
116
117 }
118 /**
119 * 受影响的行数
120 * @return int 返回受影响的行数
121 */
122 private function affectedRows()
123 {
124 return mysql_affected_rows($this->link);
125 }
126
127 /**
128 * 执行 “返回一行数据”的查询
129 * @param string $sql sql语句
130 * @return array 一维数组（一行）
131 */
132 public function getOneRow($sql)
133 {
134 $result = $this->query($sql);
135 $data = mysql_fetch_assoc($result);
136 mysql_free_result($result);
137 return $data;
138 }
139 /**
140 * 执行 "返回多行数据" 的查询
141 * @param string $sql sql语句
142 * @return array 二维数组
143 */
144 public function getAllRows($sql)
145 {
146 $result = $this->query($sql);
147 $data = array();
148 while($row = mysql_fetch_assoc($result)){
149 $data[] = $row;
150 }
151 mysql_free_result($result);
152 return $data;
153 }
154 /**
155 * 执行“获取一个数据”的查询
156 * @param string $sql sql语句
157 * @return mixed 标量数据值
158 */
159 public function getOneData($sql)
160 {
161 $result = $this->query($sql);
162 $data = mysql_fetch_row($result);
163 mysql_free_result($result);
164 return $data[0];
165 }
166
167 /**
168 * 上次insert时的自增长id值
169 * @return int insert时的id值
170 */
171 public function getInsertId()
172 {
173 return mysql_insert_id($this->link);
174 }
175
176 /**
177 * 序列化时，对指定数据进行序列化
178 * @return array 指定进行序列化的数据
179 */
180 public function __sleep()
181 {
182 return array('host', 'port', 'user', 'pass','charset', 'dbname');
183 }
184 /**
185 * 反序列化时，使用相应数据连接数据库
186 */
187 public function __wakeup()
188 {
189 $this->connect(); //连接数据库
190 }
191 /**
192 * 自动生成insert语句或update语句
193 * @param array $data insert或update的数据
194 * @param string $table 操作的数据表
195 * @param string $act 是update还是insert操作
196 * @param string $where where条件 如 id=2 如果是update必须加，否则不执行直接返回false
197 * @return bool 执行insert与update的结果
198 */
199 public function autoExecute($data, $table, $act='insert', $where='')
200 {
201 if($act == 'insert') {
202 $sql = "insert into ".$table."(";
203 $sql .=implode(",", array_keys($data));
204 $sql .= ") values ('";
205 $sql .= implode("','", array_values($data));
206 $sql .= "')";
207
208 $res = $this->exec($sql);
209 return $this->getInsertId();
210
211 } else if($act == 'update') {
212 if(!$where) { return false; }
213 $sql = 'update '.$table.' set ';
214 foreach ($data as $k => $v) {
215 $sql .= $k."='".$v."',";
216 }
217 $sql = substr($sql, 0, -1);
218 $sql .= ' where '.$where;
219
220 return $this->exec($sql);
221 } else {
222 return false;
223 }
224
225 }
226 }Copy after login
Click to view the tool class
Create public model classes and public controller classes
1) Public model class [Frame/BaseModel.class.php] Get database operation tool class instance
1 <?php
2
3 /**
4 * BaseModel.class.php 基础模型类
5 * 连接数据库
6 */
7 class BaseModel
8 {
9 protected $db = null;
10 /**
11 * 构造方法: 实例化数据库类
12 * @access public13 * @param array $config 数据库配置信息
14 */
15 function __construct(array $config=null)
16 {
17 $conf = array(
18 'host'=>'localhost',
19 'user'=>'root',
20 'pwd'=>'root',
21 'port'=>'3306',
22 'charset'=>'utf8',
23 'dbname'=>'web',
24 );
25 $conf = empty($config)? $conf : array_merge($conf,$config);
26 $this->db = Db::getDb($conf);
27 }
28 }Copy after login
2) Public control Container class [Frame/BaseController]:
Unified coding
Prompt message jump
1 <?php
2 /**
3 * BaseController.class.php 公共控制器
4 * @author young
5 */
6
7 class BaseController
8 {
9 /**
10 * 统一编码utf8
11 */
12 public function __construct()
13 {
14 header("content-type:text/html;charset=utf-8");
15 session_start();
16 }
17
18 /**
19 * 跳转提示
20 * @access public
21 * @param string $msg 跳转提示信息
22 * @param string $url 跳转的地址
23 * @param integer $time 等待时间 秒数
24 */
25 public function msg($msg='', $url='?', $time=3)
26 {
27 echo "<p><a href='$url'>返回</a></p>页面将在{$time}秒之后跳转！！";
28 header("refresh: $time; url=$url");
29 exit("<p><span style='color:red'>$msg</span></p>");
30 }
31 }Copy after login
3) Introduce tool classes, basic models and basic controller classes into the entry file
【index.php】
1 <?php
2 /**
3 * 入口文件
4 */
5 require_once 'Frame/Db.class.php';
6 require_once 'Frame/BaseModel.class.php';
7 require_once('Model/UserModel.class.php');
8 require_once 'Frame/BaseController.class.php';
9 require_once 'Controller/UserController.class.php';
10
11 //实例化控制器
12 $userCtr = new UserController();
13
14 $a = !empty($_GET['a']) ? $_GET['a'] : 'login';
15
16 $userCtr -> $a();
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Click to view the entry file
4) User model class optimization【Model/UserModel.class.php】
1 <?php
2
3 /**
4 * UserModel.class.php
5 * 用户模型类-操作表pbg_users
6 */
7 class UserModel extends BaseModel
8 {
9 /**
10 * 检验登录信息
11 * @param array $data 用户提交的登录信息
12 * @return bool true-校验成功 false-校验失败
13 */
14 public function checkLoginInfo($data)
15 {
16 $sql = "select id,username,pwd from pbg_users where username='{$data['username']}'";
17 $res = $this->db->getOneRow($sql);
18 return $res['pwd'] == md5($data['pwd']) ? : false;
19 }
20 }Copy after login
5) User controller login operation, jump prompt optimization
Use the public controller method msg()
1 。。。。。。。
2 /**
3 * 登录操作： 校验登录信息
4 */
5 public function dlogin()
6 {
7 //接收登录信息
8 $data = array();
9 $data['username'] = trim($_POST['username']);
10 $data['pwd'] = trim($_POST['pwd']);
11
12 //实例化模型，调用模型方法
13 $model = new UserModel();
14 $result = $model->checkLoginInfo($data);
15 //跳转提示
16 if($result){
17 $this->msg('登录成功！', '?a=index',3);
18 } else {
19 $this->msg('用户名或密码不正确！！');
20 }
21 }Copy after login
Merge, save and push to git
1 $ git add -A
2 $ git commit -m "MVC结构，数据库操作类，基础模型类和基础控制器类制作"
3 $ git checkout master
4 $ git merge mvc-dbtools-base
5 $ git push origin master
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Summary: Optimize the directory structure, create database operation classes, use basic model classes and basic controller classes
Next step: Implement singletons in model classes, further optimize the directory structure, and differentiate platforms (such as frontend, backend)
The above is the entire content of this article. I hope it will be helpful to everyone's study. For more related content, please pay attention to the PHP Chinese website!
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