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=delid='+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;
}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。
