Pembangunan PHP sistem pengurusan pelajar untuk mengubah suai maklumat pelajar
Buat edit.php dan ubah suai fail
Baca maklumat dalam pangkalan data dalam format yang ditentukan dan buat pengubahsuaian yang sepadan (menggunakan HTML dan PHP), dan kemudian simpan data baharu dalam pangkalan data
Kodnya adalah seperti berikut
edit.php kod fail
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>学生管理系统</title>
</head>
<body>
<?php include ('menu.php');
//1. 链接数据库
header("content-type:text/html;charset=utf8");
$conn=mysqli_connect("localhost","root","root","study");
mysqli_set_charset($conn,"utf8");
$id=$_GET['id'];
//2.执行sql
$sql_select = "select * from stu where id='$id'";
$stmt = mysqli_query($conn,$sql_select);
// var_dump($stmt);
// die();
if ($stmt>0) {
$stu = mysqli_fetch_assoc($stmt); // 解析数据
}else{
die("no have this id:{$_GET['id']}");
}
?>
<h3>修改学生信息</h3>
<form action="action.php?action=edit" method="post">
<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>年龄</td>
<td><input type="text" name="age" value="<?php echo $stu['age'];?>"></td>
</tr>
<tr>
<td>性别</td>
<td>
<input type="radio" name="sex" value="男" <?php echo ($stu['sex'] == "男")? "checked":"";?> >男
</td>
<td>
<input type="radio" name="sex" value="女" <?php echo ($stu['sex'] == "女")? "checked":"";?> >女
</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"></td>
<td><input type="reset" value="重置"></td>
</tr>
</table>
</form>
</body>
</html>Serahkan semula data yang diubah suai pada halaman yang diubah suai ke pangkalan data
Kodnya adalah seperti berikut
<?php
header("content-type:text/html;charset=utf8");
$conn=mysqli_connect("localhost","root","root","study");
mysqli_set_charset($conn,"utf8");
$id = $_POST['id'];
$name = $_POST['name'];
$age = $_POST['age'];
$class = $_POST['class'];
$sex = $_POST['sex'];
$sql = "update stu set name='$name', age='$age',sex='$sex',class='$class' where id='$id';";
$rw = mysqli_query($conn,$sql);
if ($rw > 0){
echo "<script>alert('修改成功');</script>";
}else{
echo "<script>alert('修改失败');</script>";
}
header('Location: index.php');
?>Ini melengkapkan fungsi pengubahsuaian kami Langkah seterusnya ialah fungsi padam kami
<. 🎜>
bahagian seterusnya
<body>
<meta charset="UTF-8">
<title>登陆界面</title>
<h2>学生管理系统</h2>
<a href="index.php"> 浏览学生</a>
<a href="add.php"> 添加学生</a>
<hr>
<h3>修改学生信息</h3>
<form action="action.php?action=edit" method="post">
<input name="id" value="3" type="hidden">
<table>
<tbody><tr>
<td>姓名</td>
<td><input name="name" value="刘奇" type="text"></td>
</tr>
<tr>
<td>年龄</td>
<td><input name="age" value="12" type="text"></td>
</tr>
<tr>
<td>性别</td>
<td>
<input name="sex" value="男" checked="" type="radio">男
</td>
<td>
<input name="sex" value="女" type="radio">女
</td>
</tr>
<tr>
<td>班级</td>
<td><input name="class" value="五年级" type="text"></td>
</tr>
<tr>
<td> </td>
<td><input value="修改" type="submit"></td>
<td><input value="重置" type="reset"></td>
</tr>
</tbody></table>
</form>
</body>
