diff --git "a/\346\210\264\344\275\263\350\276\211/20220523-PHP\346\223\215\344\275\234Mysql.md" "b/\346\210\264\344\275\263\350\276\211/20220523-PHP\346\223\215\344\275\234Mysql.md"
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@@ -0,0 +1,57 @@
+# 作业
+
+```PHP+HTML
+<?php
+//连接并选择数据库
+$link = mysqli_connect('localhost','root','root','student') or die("连接失败");
+
+//一般为了避免中文在数据库中乱码，要设置一下
+mysqli_query($link,"set names utf8");
+
+//创建表单user
+$db="
+    create table user(
+	    id int primary key auto_increment,
+	    name varchar(20) not null,
+	    score decimal(10,2) not null
+    );
+";
+mysqli_query($link,$db);
+
+//添加数据
+$sql1="insert into `user` (`name`,`score`) value ('陈小龙',98.5)";
+$sql2="insert into `user` (`name`,`score`) value ('吴大虫',75.5)";
+$sql3="insert into `user` (`name`,`score`) value ('陈得胜',66)";
+mysqli_query($link,$sql1);
+mysqli_query($link,$sql2);
+mysqli_query($link,$sql3);
+
+//删除数据
+$sql4="delete from `user` where id= 2";
+mysqli_query($link,$sql4);
+
+//修改数据
+$sql5="update `user` set `name`='小大的' where id=3";
+mysqli_query($link,$sql5);
+
+//查看数据
+$sql6="select * from `user` order by id";
+$result=mysqli_query($link,$sql6);
+echo  "
+        <table border=1 bgcolor='pink'>
+            <tr>
+                <th>学号</th>   
+                <th bgcolor='green'>名称</th>
+                <th>成绩</th>    
+            </tr>  
+";
+while($arr=mysqli_fetch_assoc($result)){
+    echo "
+        <tr>
+              <td>{$arr['id']}</td>
+              <td bgcolor='green'>{$arr['name']}</td>
+              <td>{$arr['score']}</td>
+        </tr>
+        ";
+};
+```