总共分四个文件：
conn.php：公用连接数据库文件
list.php：学生信息列表管理主页
add.php：实现学生信息添加功能
delete.php：实现学生信息删除功能
edit.php：实现学生信息修改功能
conn.php：
$db_host='localhost';
$db_user='root';
$db_pass='666666';
$db_name='phphx';
$charset='utf8';
@$link=mysqli_connect($db_host,$db_user,$db_pass);
if(!$link){
echo 'mysql服务器连接失败';
die();
}
if(!mysqli_select_db($link,$db_name)){
echo "选择数据库{$db_name}失败！";
die();
}
mysqli_set_charset($link,$charset);
list.php：
<?php
//包含连接数据库的公共文件
require_once('./conn.php');
$sql='select * from student order by id desc';
$result=mysqli_query($link,$sql);
//获取多行记录
$arrs=mysqli_fetch_all($result,MYSQLI_ASSOC);
//获取记录数
$records=mysqli_num_rows($result);
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>学生信息管理中心</title>
<style>
.title{
text-align: center;
margin-bottom:10px;
}
table{
border:1px solid gray;
width: 600px;
text-align: center;
border-collapse: collapse;
margin:0px auto;
}
td,th{
border:1px solid gray;
}
</style>
<script type="text/javascript">
//自定义js弹框，在用户点击确定时跳转网页
function confirmDel(id){
if(window.confirm('你真的要删除吗？')){
location.href='./delete.php?id='+id;
}
}
</script>
</head>
<body>
<div class='title'>
<h2>学生信息管理中心</h2>
<a href="./add.php">添加学生</a>
共有<font color='red'><?php echo $records; ?></font>个学生
</div>
<table>
<tr>
<th>编号</th>
<th>姓名</th>
<th>性别</th>
<th>年龄</th>
<th>学历</th>
<th>工资</th>
<th>奖金</th>
<th>籍贯</th>
<th>操作选项</th>
</tr>
<?php
foreach($arrs as $arr){
?>
<tr>
<td><?php echo $arr['id']; ?></td>
<td><?php echo $arr['name']; ?></td>
<td><?php echo $arr['sex']; ?></td>
<td><?php echo $arr['age']; ?></td>
<td><?php echo $arr['edu']; ?></td>
<td><?php echo $arr['salary']; ?></td>
<td><?php echo $arr['bonus']; ?></td>
<td><?php echo $arr['city']; ?></td>
<td>
<a href="./edit.php?id=<?php echo $arr['id'] ?>">修改</a>
<a href="#" onClick=confirmDel(<?php echo $arr['id']?>)>删除</a>
</td>
</tr>
<?php } ?>
</table>
</body>
</html>
add.php：
<?php
//包含连接数据库的公共文件
require_once('./conn.php');
//判断表单是否合法提交
if(isset($_POST['token']) && $_POST['token']=='add'){
//获取表单提交数据
$name = $_POST['name'];
$sex = $_POST['sex'];
$age = $_POST['age'];
$edu = $_POST['edu'];
$salary = $_POST['salary'];
$bonus = $_POST['bonus'];
$city = $_POST['city'];
//构建插入的sql语句
$sql="insert into student values(null,'$name','$sex',$age,'$edu',$salary,$bonus,'$city')";
//判断数据是否插入成功
if(mysqli_query($link,$sql)){
echo "<h2>学生信息添加成功！</h2>";
header("refresh:3;url=list.php");
die();
}else{
echo "<h2>学生信息添加失败！</h2>";
header("refresh:3;url=list.php");
die();
}
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>学生信息管理中心</title>
<style>
.title{
text-align: center;
margin-bottom:10px;
}
table{
border:1px solid gray;
width: 600px;
border-collapse: collapse;
margin:0px auto;
}
td{
border:1px solid gray;
}
.td_left{
text-align: right;
}
</style>
</head>
<body>
<div class='title'>
<h2>学生信息管理中心</h2>
<a href="./list.php">返回首页</a>
</div>
<form action="" name="form1" method="post">
<table>
<tr>
<td class='td_left'>姓名：</td>
<td><input type="text" name="name"></td>
</tr>
<tr>
<td class='td_left'>性别：</td>
<td>
<input type="radio" name="sex" value='1' checked>男
<input type="radio" name="sex" value='2'>女
</td>
</tr>
<tr>
<td class='td_left'>年龄：</td>
<td><input type="text" name="age"></td>
</tr>
<tr>
<td class='td_left'>学历：</td>
<td>
<select name="edu">
<option value="1">初中</option>
<option value="2">高中</option>
<option value="3" selected>大专</option>
<option value="4">大本</option>
<option value="5">研究生</option>
</select>
</td>
</tr>
<tr>
<td class='td_left'>工资：</td>
<td><input type="text" name="salary"></td>
</tr>
<tr>
<td class='td_left'>奖金：</td>
<td><input type="text" name="bonus"></td>
</tr>
<tr>
<td class='td_left'>籍贯：</td>
<td><input type="text" name="city"></td>
</tr>
<tr>
<td class='td_left'></td>
<td>
<input type="submit" value="提交">
<input type="hidden" name='token' value='add'>
<input type="reset" value="重置">
</td>
</tr>
</table>
</form>
</body>
</html>
delete.php：
require_once('./conn.php');
//获取地址栏传递的id值
$id=$_GET['id'];
//构建删除的sql语句
$sql="delete from student where id={$id}";
//判断记录是否删除成功
if(mysqli_query($link,$sql)){
echo "<h2>id={$id}的记录删除成功！</h2>";
header("refresh:3;url=list.php");
die();
}else{
echo "<h2>id={$id}的记录删除失败！</h2>";
header("refresh:3;url=list.php");
die();
}
edit.php：
<?php
//包含连接数据库的公共文件
require_once('./conn.php');
$id=$_GET['id'];
$result=mysqli_query($link,"select * from student where id={$id}");
$arr=mysqli_fetch_assoc($result);
//判断表单是否合法提交
//为保证数据安全，采用令牌验证
//在此先用静态数据演示
if(isset($_POST['token']) && $_POST['token']=='add'){
//获取表单提交数据
$name = $_POST['name'];
$sex = $_POST['sex'];
$age = $_POST['age'];
$edu = $_POST['edu'];
$salary = $_POST['salary'];
$bonus = $_POST['bonus'];
$city = $_POST['city'];
//构建更新的sql语句
$sql="update student set name='{$name}',sex='{$sex}',age={$age},edu='{$edu}',salary={$salary},bonus={$bonus},city='{$city}' where id=$id";
//判断数据是否插入成功
if(mysqli_query($link,$sql)){
echo "<h2>学生信息修改成功！</h2>";
header("refresh:3;url=list.php");
die();
}else{
echo "<h2>学生信息修改失败！</h2>";
header("refresh:3;url=list.php");
die();
}
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>学生信息管理系统</title>
<style>
.title{
text-align: center;
margin-bottom:10px;
}
table{
border:1px solid gray;
width: 600px;
border-collapse: collapse;
margin:0px auto;
}
td{
border:1px solid gray;
}
.td_left{
text-align: right;
}
</style>
</head>
<body>
<div class='title'>
<h2>学生信息管理中心</h2>
<a href="./list.php">返回首页</a>
</div>
<form action="" name="form1" method="post">
<table>
<tr>
<td class='td_left'>姓名：</td>
<td><input type="text" name="name" value="<?php echo $arr['name']; ?>"></td>
</tr>
<tr>
<td class='td_left'>性别：</td>
<td>
<input type="radio" name="sex" value='1'
<?php if($arr['sex']=='男'){echo 'checked';} ?>
>男
<input type="radio" name="sex" value='2'
<?php if($arr['sex']=='女'){echo 'checked';} ?>
>女
</td>
</tr>
<tr>
<td class='td_left'>年龄：</td>
<td><input type="text" name="age" value="<?php echo $arr['age']; ?>"></td>
</tr>
<tr>
<td class='td_left'>学历：</td>
<td>
<select name="edu">
<option value="1"
<?php if($arr['edu']=='初中'){echo 'selected';} ?>
>初中</option>
<option value="2"
<?php if($arr['edu']=='高中'){echo 'selected';} ?>
>高中</option>
<option value="3"
<?php if($arr['edu']=='大专'){echo 'selected';} ?>
>大专</option>
<option value="4"
<?php if($arr['edu']=='大本'){echo 'selected';} ?>
>大本</option>
<option value="5"
<?php if($arr['edu']=='研究生'){echo 'selected';} ?>
>研究生</option>
</select>
</td>
</tr>
<tr>
<td class='td_left'>工资：</td>
<td><input type="text" name="salary"
value="<?php echo $arr['salary']; ?>"
></td>
</tr>
<tr>
<td class='td_left'>奖金：</td>
<td><input type="text" name="bonus"
value="<?php echo $arr['bonus']; ?>"
></td>
</tr>
<tr>
<td class='td_left'>籍贯：</td>
<td><input type="text" name="city"
value="<?php echo $arr['city']; ?>"
></td>
</tr>
<tr>
<td class='td_left'></td>
<td>
<input type="submit" value="提交">
<input type="hidden" name='token' value='add'>
<input type="reset" value="重置">
</td>
</tr>
</table>
</form>
</body>
</html>
