PDO實現學生管理系統
阿新 • • 發佈：2020-03-24
這裡實現一個簡單的學生管理系統，供大家參考，具體內容如下
需要建立如下檔案：
- index.php
- menu.php //選單欄
- add.php //新增資料
- edit.php // 編輯資料
- action.php // 新增，刪除，編輯的實現
分別寫一下每個檔案的程式碼：
menu.php:
<html> <h2>學生資訊管理</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>學生資訊管理系統</title>
</head>
<script>
function doDel(id){
if(confirm("是否要刪除")){
window.location='action.php?action=del&id='+id;
}
}
</script>
<body>
<center>
<?php include("menu.php");?>
<h3>瀏覽學生資訊</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. 連線資料庫
try{
$pdo = new PDO("mysql:host=localhost;dbname=myapp;","root","");
}catch(PDOException $e){
die("fail to connect db".$e->getMessage());
}
//2. 執行資料庫，並解析遍歷
$sql = "SELECT * FROM users";
foreach($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>學生資訊管理系統</title>
</head>
<body>
<center>
<?php include("menu.php");?>
<h3>增加學生資訊</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>學生資訊管理系統</title>
</head>
<body>
<center>
<?php include("menu.php");
//獲取修改資訊
//1. 連線資料庫
try{
$pdo = new PDO("mysql:host=localhost;dbname=myapp;","");
}catch(PDOException $e){
die("fail to connect db".$e->getMessage());
}
//2. 拼裝sql語句，取出資訊
$sql = "SELECT * FROM users WHERE id=".$_GET['id'];
$stmt = $pdo->query($sql);
if($stmt->rowCount() > 0){
$stu = $stmt->fetch(PDO::FETCH_ASSOC); //解析資料
}else{
die("沒有修改的資訊");
}
?>
<h3>修改學生資訊</h3>
<form action="action.php?action=edit" method="post">
<!-- 以隱藏域的方式新增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. 連線資料庫
try{
$pdo = new PDO("mysql:host=localhost;dbname=myapp;","");
}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，也希望大家多多支援我們。