PDO实现学生管理系统
发布:smiling 来源: PHP粉丝网 添加日期:2022-02-21 09:49:31 浏览: 评论:0
这里实现一个简单的学生管理系统,供大家参考,具体内容如下
需要建立如下文件:
index.php
menu.php //菜单栏
add.php //添加数据
edit.php // 编辑数据
action.php // 添加,删除,编辑的实现
分别写一下每个文件的代码:
menu.php:
- <html>
- <h2>学生信息管理</h2>
- <a href="index.php" rel="external nofollow" >浏览学生</a>
- <a href="add.php" rel="external nofollow" >增加学生</a>
- <hr>
- </html>
index.php
- <html>
- <head>
- <meta charset="UTF-8">
- <title>学生信息管理系统</title>
- </head>
- <script>
- function doDel(id){
- if(confirm("是否要删除")){
- window.location='action.php?action=del&id='+id;
- }
- }
- </script>
- <body>
- <center>
- <?php include("menu.php");?>
- <h3>浏览学生信息</h3>
- <table width="600" border="1">
- <tr>
- <th>ID</th>
- <th>姓名</th>
- <th>姓别</th>
- <th>年龄</th>
- <th>班级</th>
- <th>操作</th>
- </tr>
- <?php
- //1. 连接数据库
- try{
- $pdo = new PDO("mysql:host=localhost;dbname=myapp;", "root", "");
- }catch(PDOException $e){
- die("fail to connect db".$e->getMessage());
- }
- //2. 执行数据库,并解析遍历
- $sql = "SELECT * FROM users";
- foreach($pdo->query($sql) as $val){
- echo "<tr>";
- echo "<td>{$val['id']}</td>";
- echo "<td>{$val['name']}</td>";
- echo "<td>{$val['sex']}</td>";
- echo "<td>{$val['age']}</td>";
- echo "<td>{$val['class']}</td>";
- echo "<td>
- <a href='javascript:doDel({$val['id']})'>删除</a>
- <a href='edit.php?id={$val['id']}'>修改</a>
- </td>";
- echo "</tr>";
- }
- ?>
- </table>
- </center>
- </body>
- </html>
add.php
- <html>
- <head>
- <meta charset="UTF-8">
- <title>学生信息管理系统</title>
- </head>
- <body>
- <center>
- <?php include("menu.php");?>
- <h3>增加学生信息</h3>
- <form action="action.php?action=add" method="post">
- <table>
- <tr>
- <td>姓名</td>
- <td><input type="text" name="name"/></td>
- </tr>
- <tr>
- <td>姓别</td>
- <td>
- <input type="radio" name="sex" value="m"/>男
- <input type="radio" name="sex" value="w"/>女
- </td>
- </tr>
- <tr>
- <td>年龄</td>
- <td><input type="text" name="age"/></td>
- </tr>
- <tr>
- <td>班级</td>
- <td><input type="text" name="class"/></td>
- </tr>
- <tr>
- <td> </td>
- <td>
- <input type="submit" value="增加"/>
- <input type="submit" value="重置"/>
- </td>
- </tr>
- </table>
- </form>
- </center>
- </body>
- </html>
edit.php
- <html>
- <head>
- <meta charset="UTF-8">
- <title>学生信息管理系统</title>
- </head>
- <body>
- <center>
- <?php include("menu.php");
- //获取修改信息
- //1. 连接数据库
- try{
- $pdo = new PDO("mysql:host=localhost;dbname=myapp;", "root", "");
- }catch(PDOException $e){
- die("fail to connect db".$e->getMessage());
- }
- //2. 拼装sql语句,取出信息
- $sql = "SELECT * FROM users WHERE id=".$_GET['id'];
- $stmt = $pdo->query($sql);
- if($stmt->rowCount() > 0){
- $stu = $stmt->fetch(PDO::FETCH_ASSOC); //解析数据
- }else{
- die("没有修改的信息");
- }
- ?>
- <h3>修改学生信息</h3>
- <form action="action.php?action=edit" method="post">
- <!-- 以隐藏域的方式添加id -->
- <input type="hidden" name="id" value="<?php echo $stu['id']; ?>">
- <table>
- <tr>
- <td>姓名</td>
- <td><input type="text" name="name" value="<?php echo $stu['name'];?>"/></td>
- </tr>
- <tr>
- <td>姓别</td>
- <td>
- <input type="radio" name="sex" value="m" <?php echo ($stu['sex']==
- "m")? "checked": ""; ?>/>男
- <input type="radio" name="sex" value="w" <?php echo ($stu['sex']==
- "w")? "checked": ""; ?>/>女
- </td>
- </tr>
- <tr>
- <td>年龄</td>
- <td><input type="text" name="age" value="<?php echo $stu['age'];?>"/></td>
- </tr>
- <tr>
- <td>班级</td>
- <td><input type="text" name="class" value="<?php echo $stu['class'];?>"/></td>
- </tr>
- <tr>
- <td> </td>
- <td>
- <input type="submit" value="修改"/>
- <input type="submit" value="重置"/>
- </td>
- </tr>
- </table>
- </form>
- </center>
- </body>
- </html>
action.php
- <?php
- //1. 连接数据库
- try{
- $pdo = new PDO("mysql:host=localhost;dbname=myapp;", "root", "");
- }catch(PDOException $e){
- die("fail to connect db".$e->getMessage());
- }
- //2. 通过action的值做相应的操作
- switch($_GET['action']){
- case "add": //增加操作
- $name = $_POST['name'];
- $sex = $_POST['sex'];
- $age = $_POST['age'];
- $class = $_POST['class'];
- $sql = "INSERT INTO users VALUES (null, '{$name}','{$sex}', '{$age}', '{$class}')";
- $rw = $pdo->exec($sql);
- if($rw > 0){
- echo "<script>alert('增加成功'); window.location='index.php'</script>";
- }else{
- echo "<script>alert('增加失败'); window.history.back()</script>";
- }
- break;
- case "del":
- $id = $_GET['id'];
- $sql = "DELETE FROM users WHERE id={$id}";
- $pdo->exec($sql);
- header("location:index.php");
- break;
- case "edit":
- $name = $_POST['name'];
- $sex = $_POST['sex'];
- $age = $_POST['age'];
- $class = $_POST['class'];
- $id = $_POST['id'];
- $sql = "UPDATE users SET name='{$name}',sex='{$sex}',age={$age},class={$class}
- WHERE id={$id}";
- $rw = $pdo->exec($sql);
- if($rw > 0){
- echo "<script>alert('修改成功'); window.location='index.php'</script>";
- }else{
- echo "<script>alert('修改失败'); window.history.back()</script>";
- }
- break;
- }
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