這里實現一個簡單的學生管理系統，供大家參考，具體內容如下
需要建立如下文件：
- index.php
- menu.php //菜單欄
- add.php //添加數據
- edit.php // 編輯數據
- action.php // 添加，刪除，編輯的實現
分別寫一下每個文件的代碼：
menu.php:
html>
h2>學生信息管理/h2>
a href="index.php" rel="external nofollow" >瀏覽學生/a>
a href="add.php" rel="external nofollow" >增加學生/a>
hr>
/html>
index.php
html>
head>
meta charset="UTF-8">
title>學生信息管理系統/title>
/head>
script>
function doDel(id){
if(confirm("是否要刪除")){
window.location='action.php?action=delid='+id;
}
}
/script>
body>
center>
?php include("menu.php");?>
h3>瀏覽學生信息/h3>
table width="600" border="1">
tr>
th>ID/th>
th>姓名/th>
th>姓別/th>
th>年齡/th>
th>班級/th>
th>操作/th>
/tr>
?php
//1. 連接數據庫
try{
$pdo = new PDO("mysql:host=localhost;dbname=myapp;", "root", "");
}catch(PDOException $e){
die("fail to connect db".$e->getMessage());
}
//2. 執行數據庫，并解析遍歷
$sql = "SELECT * FROM users";
foreach($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({$val['id']})'>刪除/a>
a href='edit.php?id={$val['id']}'>修改/a>
/td>";
echo "/tr>";
}
?>
/table>
/center>
/body>
/html>
add.php
html>
head>
meta charset="UTF-8">
title>學生信息管理系統/title>
/head>
body>
center>
?php include("menu.php");?>
h3>增加學生信息/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>姓別/td>
td>
input type="radio" name="sex" value="m"/>男
input type="radio" name="sex" value="w"/>女
/td>
/tr>
tr>
td>年齡/td>
td>input type="text" name="age"/>/td>
/tr>
tr>
td>班級/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>學生信息管理系統/title>
/head>
body>
center>
?php include("menu.php");
//獲取修改信息
//1. 連接數據庫
try{
$pdo = new PDO("mysql:host=localhost;dbname=myapp;", "root", "");
}catch(PDOException $e){
die("fail to connect db".$e->getMessage());
}
//2. 拼裝sql語句，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); //解析數據
}else{
die("沒有修改的信息");
}
?>
h3>修改學生信息/h3>
form action="action.php?action=edit" method="post">
!-- 以隱藏域的方式添加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 $stu['name'];?>"/>/td>
/tr>
tr>
td>姓別/td>
td>
input type="radio" name="sex" value="m" ?php echo ($stu['sex']==
"m")? "checked": ""; ?>/>男
input type="radio" name="sex" value="w" ?php echo ($stu['sex']==
"w")? "checked": ""; ?>/>女
/td>
/tr>
tr>
td>年齡/td>
td>input type="text" name="age" value="?php echo $stu['age'];?>"/>/td>
/tr>
tr>
td>班級/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. 連接數據庫
try{
$pdo = new PDO("mysql:host=localhost;dbname=myapp;", "root", "");
}catch(PDOException $e){
die("fail to connect db".$e->getMessage());
}
//2. 通過action的值做相應的操作
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('增加失敗'); 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('修改失敗'); window.history.back()/script>";
}
break;
}
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持腳本之家。
