diff --git "a/\350\246\203\346\241\202\350\216\262/20220524.txt" "b/\350\246\203\346\241\202\350\216\262/20220524.txt"
new file mode 100644
index 0000000000000000000000000000000000000000..151055dc94202a7ccb4e2cfac8c5bd58b81ddb8f
--- /dev/null
+++ "b/\350\246\203\346\241\202\350\216\262/20220524.txt"
@@ -0,0 +1,210 @@
+创建数据库：
+
+CREATE DATABASE book charset utf8;
+use book;
+
+CREATE TABLE bookif(
+book_id int PRIMARY KEY auto_increment,
+book_name VARCHAR(20) not null,
+book_price DECIMAL not null,
+book_author VARCHAR(20) 
+
+
+);
+连接数据库：
+
+<?php
+
+error_reporting(E_ALL^E_WARNING);
+$conn=mysqli_connect("127.0.0.1","root","root","book") or die("连接失败".mysqli_connect_error());
+
+首页：
+
+<?php
+include_once ('conn.php');
+$sql = "select * from `bookif` order by `book_id`";
+ $select = mysqli_query($conn, $sql);
+
+?>
+
+
+
+
+<html>
+    <hand>
+        <meta charset="UTF-8">
+        <title>图书管理系统</title>
+    </hand>
+<body>
+<h1>图书管理系统</h1>
+<table border="1">
+    <tr align="center">
+        <th>图书编号</th>
+        <th>图书名字</th>
+        <th>图书价格</th>
+        <th>图书作者</th>
+        <th>功能</th>
+    </tr>
+
+
+    <?php
+    if (!mysqli_num_rows($select)){
+       echo "<tr align='center' ><td colspan='4'>暂无数据！</td></tr>";
+    }else {
+        while ($row = mysqli_fetch_assoc($select)) {
+
+            ?>
+            <tr>
+                <td><?php echo $row['book_id'] ?></td>
+                <td><?php echo $row['book_name'] ?></td>
+                <td><?php echo $row['book_price'] ?></td>
+                <td><?php echo $row['book_author'] ?></td>
+                <td><a href="amend.php?book_id=<?php echo $row['book_id'] ?>">修改</a>|
+                    <a href="del.php?book_id=<?php echo $row['book_id']?>">删除</a></td>
+            </tr>
+
+
+            <?php
+        }
+    }
+?>
+
+
+
+
+</table>
+<a href="add.php">添加书籍</a>
+
+</body>
+</html>
+添加书籍：
+
+<?php
+include_once ('conn.php');
+?>
+
+<html>
+<head>
+    <meta charset="UTF-8">
+    <title>添加书籍</title>
+</head>
+<body>
+<h1>添加书籍</h1>
+<form action="save.php" method="post">
+
+     图书名字：<input type="text" name="book_name"><br>
+     图书价格：<input type="text" name="book_price"><br>
+     图书作者：<input type="text" name="book_author"><br>
+     <input type="submit" name="submit" value="提交">
+
+
+
+</form>
+
+
+
+</body>
+</html>
+
+
+
+添加书籍处理：
+
+<?php
+include_once ('conn.php');
+
+if(!isset($_POST['submit'])){
+    die("非法访问");
+}
+
+
+$book_name=$_POST['book_name'];
+$book_price=$_POST['book_price'];
+$book_author=$_POST['book_author'];
+
+$sql="insert into `bookif` (`book_name`,`book_price`,`book_author`) values ('$book_name',$book_price,'$book_author')";
+$re = mysqli_query($conn,$sql);
+
+if (re){
+    echo "添加成功"."<a href='dome.php'>返回</a>";
+}else{
+    echo "添加失败";
+}
+
+
+?>
+修改书籍：
+
+<?php
+include_once ('conn.php');
+$book_id=$_GET['book_id'];
+$sql="select * from `bookif` where `book_id`=$book_id";
+$re=mysqli_query($conn,$sql);
+$row=mysqli_fetch_assoc($re);
+if(!isset($_GET['book_id'])){
+    die("非法访问");
+}
+?>
+
+
+<html>
+<head>
+    <meta charset="UTF-8">
+    <title>修改书籍</title>
+</head>
+<body>
+<h1>修改书籍</h1>
+<form action="update.php" method="post">
+
+    图书名字：<input type="text" name="book_name" value="<?php echo $row['book_name']?>"><br>
+    图书价格：<input type="text" name="book_price" value="<?php echo $row['book_price']?>"><br>
+    图书作者：<input type="text" name="book_author" value="<?php echo $row['book_author']?>"><br>
+    <input type="submit" name="submit" value="提交">
+
+
+
+</form>
+
+
+
+</body>
+</html>
+修改书籍处理：
+
+<?php
+
+include_once ('conn.php');
+if(!isset($_POST['submit'])){
+    die("非法访问");
+}
+$book_name=$_POST['book_name'];
+$book_price=$_POST['book_price'];
+$book_author=$_POST['book_author'];
+
+$sql="update `bookif` set `book_name`='$book_name',`book_price`='$book_price',`book_author`='$book_author'";
+$re=mysqli_query($conn,$sql);
+$up=mysqli_fetch_assoc($re);
+
+
+if($re){
+    echo "更新成功"."<a href='dome.php'>返回</a>";
+}else{
+    echo "更新失败";
+}
+删除书籍：
+
+<?php
+
+
+
+include_once ('conn.php');
+$book_id=$_GET['book_id'];
+if(!isset($_GET['book_id'])){
+    die("非法访问");
+}
+$sql = "delete from `bookif` where `book_id`=$book_id";
+$re = mysqli_query($conn,$sql);
+if ($re){
+    echo "删除成功"."<a href='dome.php'>返回</a>";
+}else{
+    echo "删除失败";
\ No newline at end of file
