From a68379008d3fdf91b9cd84c1172cae9dd25e83fd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9D=A8=E8=8C=97=E5=8D=9A?= <1072852081@qq.com>
Date: Tue, 24 May 2022 23:46:19 +0800
Subject: [PATCH] 11

---
 .../20220524-\344\275\234\344\270\232.md"     | 187 ++++++++++++++++++
 1 file changed, 187 insertions(+)
 create mode 100644 "\346\235\250\350\214\227\345\215\232/20220524-\344\275\234\344\270\232.md"
diff --git "a/\346\235\250\350\214\227\345\215\232/20220524-\344\275\234\344\270\232.md" "b/\346\235\250\350\214\227\345\215\232/20220524-\344\275\234\344\270\232.md"
new file mode 100644
index 0000000..49db17e
--- /dev/null
+++ "b/\346\235\250\350\214\227\345\215\232/20220524-\344\275\234\344\270\232.md"
@@ -0,0 +1,187 @@
+```php
+create database Student charset utf8;
+use Student;
+create table user(
+id int primary key auto_increment,
+name varchar(100) not null,
+score decimal(4,1) not null
+);
+//连接数据库
+<?php
+/**
+ * Created by PhpStorm.
+ * User: Administrator
+ * Date: 2022/5/24
+ * Time: 16:37
+ */
+error_reporting(E_ALL ^ E_WARNING);
+
+$con =mysqli_connect('127.0.0.1','root','123456','student') or die("服务器连接失败！");
+
+mysqli_query($con,'set names utf8');
+
+//首页
+<?php
+include_once('conn.php');
+$sql = "select * from `user` order by id";
+$result = mysqli_query($con,$sql);
+?>
+<html>
+<head>
+    <meta charset="utf-8">
+    <title>学生管理系统</title>
+
+</head>
+<body>
+    <h1>学生管理系统——首页</h1>
+    <table border="1" width="450">
+        <tr>
+            <th>学号</th>
+            <th>姓名</th>
+            <th>分数</th>
+   			<th>编辑</th>
+        </tr>
+        <?php
+        if(!mysqli_num_rows($result)) {
+            echo "<tr align='center'><td colspan='3'>暂无数据</td></tr>";
+        }else {
+            while ($row = mysqli_fetch_assoc($result)) {
+                ?>
+                <tr align="center">
+                    <td><?php echo $row['id'] ?></td>
+                    <td><?php echo $row['name'] ?></td>
+                    <td><?php echo $row['score'] ?></td>
+                    <td><a href="edit.php?id=<?php echo $row['id'] ?>">修改</a>|
+                        <a href="delete.php?id=<?php echo $row['id'] ?>">删除</a></td>
+                </tr>
+                <?php
+            }
+        }
+        ?>
+    </table>
+    <a href="add.php">添加学生信息</a>
+</body>
+</html>
+
+//增加数据
+            <?php
+/**
+ * Created by PhpStorm.
+ * User: Administrator
+ * Date: 2022/5/24
+ * Time: 16:41
+ */
+?>
+<html>
+<head>
+    <title>添加学生信息</title>
+</head>
+<body>
+    <h1>添加学生信息</h1>
+    <form action="save.php" method="post">
+    <table border="1" width="300">
+        <tr>
+            <th>姓名</th>
+            <td><input type="text" name="name" ></td>
+        </tr>
+        <tr>
+            <th>分数</th>
+            <td><input type="text" name="score" ></td>
+        </tr>
+        <tr>
+            <td colspan="2" align="center"><input type="submit" value="提交" name="submit">
+                &nbsp;&nbsp;&nbsp;&nbsp; <input type="reset" name="reset" value="取消"></td>
+        </tr>
+    </table>
+    <a href="index.php">返回</a>
+    </form>
+</body>
+</html>
+
+//保存数据
+    <?php
+include_once('conn.php');
+if (!isset($_POST['submit'])){
+    die("非法访问！") ;
+}
+
+$name=$_POST['name'];
+$score=$_POST['score'];
+
+$sql = "insert into `user` (name,score) values ('$name','$score')";
+
+$ret = mysqli_query($con,$sql);
+
+if ($ret){
+    echo "添加成功 <a href='./index.php'>返回首页</a>";
+}else{
+    echo "添加失败 <a href = './index.php'>返回首页</a>";
+}
+
+//删除数据
+<?php
+include_once ('conn.php');
+$id=$_GET['id'];
+$sql="delete from `user` where id=$id";
+$result= mysqli_query($con,$sql);
+if ($result){
+    echo "删除成功 <a href='./index.php'>返回首页</a>";
+}else{
+    echo "删除失败 <a href='./index.php'>返回首页</a>";
+}
+//修改数据
+<?php
+include_once ("conn.php");
+if(!isset($_GET['id'])){
+    die("非法访问");
+}
+$id=$_GET['id'];
+
+$sql = "select * from `user` where id=$id";
+$result = mysqli_query($con,$sql);
+$row = mysqli_fetch_assoc($result);
+?>
+<html>
+<head>
+    <title>修改学生信息</title>
+</head>
+<body>
+<h1>修改学生信息</h1>
+<form action="update.php" method="post">
+    <table border="1" width="300">
+        <tr>
+            <th>姓名</th>
+            <td><input type="text" name="name" ></td>
+        </tr>
+        <tr>
+            <th>分数</th>
+            <td><input type="text" name="score" ></td>
+        </tr>
+        <input type="text" name="id" value="<?php echo $row['id'] ?>" hidden>
+
+        <tr>
+            <td colspan="2" align="center"><input type="submit" value="提交" name="submit">
+                &nbsp;&nbsp;&nbsp;&nbsp; <input type="reset" name="reset" value="取消"></td>
+        </tr>
+    </table>
+    <a href="index.php">返回</a>
+</form>
+</body>
+</html>
+//更新数据
+<?php
+include_once ('conn.php');
+if(!isset($_POST['submit'])){
+    die("非法访问！");
+}
+$id=$_POST['id'];
+$name=$_POST['name'];
+$score=$_POST['score'];
+$sql="update `user` set name='$name', score='$score' where id=$id";
+$result = mysqli_query($con,$sql);
+if ($result)  {
+    echo "修改成功 <a href='./index.php'>返回首页</a>";
+}else{
+    echo "修改失败 <a href='./index.php'>返回首页</a>";
+}
+```
\ No newline at end of file
-- 
Gitee

