diff --git "a/\345\220\264\351\207\217/20220523--php\350\277\236\346\216\245mysql\345\242\236\345\210\240\346\224\271\346\237\245.md" "b/\345\220\264\351\207\217/20220523--php\350\277\236\346\216\245mysql\345\242\236\345\210\240\346\224\271\346\237\245.md"
new file mode 100644
index 0000000000000000000000000000000000000000..fe473427f0c90484ba2e50a1e4af26c7091d4244
--- /dev/null
+++ "b/\345\220\264\351\207\217/20220523--php\350\277\236\346\216\245mysql\345\242\236\345\210\240\346\224\271\346\237\245.md"
@@ -0,0 +1,89 @@
+```php
+<?php
+/**
+ * Created by PhpStorm.
+ * User: Administrator
+ * Date: 2022/5/23
+ * Time: 11:12
+ */
+$database = mysqli_connect('localhost','root','root','student');
+$create = "create table user(
+        id int primary key auto_increment,
+        name varchar(20) not null,
+        score double not null
+)";
+if ($database){
+    echo '连接成功<br>';
+    $initialize = "drop table user";
+    $itl = mysqli_query($database,$initialize);
+    $ct = mysqli_query($database,$create);
+    if ($itl){
+        echo '初始化成功<hr>';
+
+    }else{
+        echo '初始化失败,错误内容：'.mysqli_error($database).'<hr>';
+    }
+
+}else{
+    echo '连接失败,错误内容：'.mysqli_connect_error().'<br>';
+}
+$ins = "insert into user values (1,'陈小龙',98.5),
+                                  (2,'吴大虫',75.5),
+                                  (3,'陈得胜',66)";
+$ss = mysqli_query($database,$ins);//插入数据
+if ($ss){
+    echo '数据插入成功<br>';
+    $selects = "select * from user";
+    $ss2= mysqli_query($database,$selects);
+    while($a=mysqli_fetch_assoc($ss2)){
+        echo '编号：'.$a['id'].'<br>'.'名字：'.$a['name'].'<br>'.'分数：'.$a['score'].'<br><br>';
+    }
+}else{
+    echo '数据插入失败,错误内容：'.mysqli_error($database).'<br>';
+}
+echo "<hr>";
+$add = "ALTER TABLE user ADD sex varchar(10)";//添加新的字段'sex'
+$ss = mysqli_query($database,$add);
+if ($ss){
+    echo '成功添加新的字段<hr>';
+}else{
+    echo '添加失败'.mysqli_error($database).'<hr>';
+}
+$select = "select * from user where id=1";
+$ss = mysqli_query($database,$select);
+if ($ss){
+    echo '查询成功<br>';
+    while($a=mysqli_fetch_assoc($ss)){
+        echo '编号：'.$a['id'].'<br>'.'名字：'.$a['name'].'<br>'.'分数：'.$a['score'].'<br>'.'性别：'.$a['sex'].'<hr>';
+    }
+
+}else{
+    echo '查询失败，失败原因：'.mysqli_error($database).'<hr>';
+}
+$delete = "delete from user where id=1";//三渠id为1的用户
+$ss = mysqli_query($database,$delete);
+if ($ss){
+    echo '三渠成功！<br>';
+    $select = "select * from user";
+    $ss2= mysqli_query($database,$select);
+    while($a=mysqli_fetch_assoc($ss2)) {
+        echo '编号：'.$a['id'].'<br>'.'名字：'.$a['name'].'<br>'.'分数：'.$a['score'].'<br>'.'性别：'.$a['sex'].'<br><br>';
+            }
+            echo "<hr>";
+}else{
+    echo '三渠失败，失败原因：'.mysqli_error($database).'<hr>';
+}
+$update = "update user set sex='男' where name='吴大虫'";//修改吴大虫的性别为男
+$ss = mysqli_query($database,$update);
+if ($ss){
+    echo "修改成功<br>";
+    $select = "select * from user";
+    $ss2= mysqli_query($database,$select);
+    while($a=mysqli_fetch_assoc($ss2)) {
+        echo '编号：'.$a['id'].'<br>'.'名字：'.$a['name'].'<br>'.'分数：'.$a['score'].'<br>'.'性别：'.$a['sex']. '<br><br>';
+    }
+}else{
+    echo '修改失败，失败原因：'.mysqli_error($database).'<hr>';
+}
+```
+