PHP development student management system to modify student information
Create edit.php and modify the file
Read the information in the database in the specified format and make corresponding modifications (using HTML and PHP), and then store the new data in the database
The code is as follows
edit.php file code
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>學(xué)生管理系統(tǒng)</title>
</head>
<body>
<?php include ('menu.php');
//1. 鏈接數(shù)據(jù)庫
header("content-type:text/html;charset=utf8");
$conn=mysqli_connect("localhost","root","root","study");
mysqli_set_charset($conn,"utf8");
$id=$_GET['id'];
//2.執(zhí)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); // 解析數(shù)據(jù)
}else{
die("no have this id:{$_GET['id']}");
}
?>
<h3>修改學(xué)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>年齡</td>
<td><input type="text" name="age" value="<?php echo $stu['age'];?>"></td>
</tr>
<tr>
<td>性別</td>
<td>
<input type="radio" name="sex" value="男" <?php echo ($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"></td>
<td><input type="reset" value="重置"></td>
</tr>
</table>
</form>
</body>
</html>Resubmit the modified data on the modified page to the database
The code is as follows
<?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('修改失敗');</script>";
}
header('Location: index.php');
?>This completes our modification function. The next step is our delete function
