From fb7f3121b0f964f437ad6a61f35a92781101191e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=8F=B6=E6=80=9D=E6=80=9D?= <3242902095@qq.com>
Date: Tue, 24 May 2022 00:06:01 +0800
Subject: [PATCH] =?UTF-8?q?=E6=8F=90=E4=BA=A4?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...07\344\273\266\344\270\212\344\274\240.md" |  0
 ...16\345\242\236\345\210\240\346\224\271.md" | 73 +++++++++++++++++++
 2 files changed, 73 insertions(+)
 rename "\345\217\266\346\200\235\346\200\235/200220518-\346\226\207\344\273\266\344\270\212\344\274\240.md" => "\345\217\266\346\200\235\346\200\235/20220518-\346\226\207\344\273\266\344\270\212\344\274\240.md" (100%)
 create mode 100644 "\345\217\266\346\200\235\346\200\235/20220523-\350\277\236\346\216\245\344\270\216\345\242\236\345\210\240\346\224\271.md"

diff --git "a/\345\217\266\346\200\235\346\200\235/200220518-\346\226\207\344\273\266\344\270\212\344\274\240.md" "b/\345\217\266\346\200\235\346\200\235/20220518-\346\226\207\344\273\266\344\270\212\344\274\240.md"
similarity index 100%
rename from "\345\217\266\346\200\235\346\200\235/200220518-\346\226\207\344\273\266\344\270\212\344\274\240.md"
rename to "\345\217\266\346\200\235\346\200\235/20220518-\346\226\207\344\273\266\344\270\212\344\274\240.md"
diff --git "a/\345\217\266\346\200\235\346\200\235/20220523-\350\277\236\346\216\245\344\270\216\345\242\236\345\210\240\346\224\271.md" "b/\345\217\266\346\200\235\346\200\235/20220523-\350\277\236\346\216\245\344\270\216\345\242\236\345\210\240\346\224\271.md"
new file mode 100644
index 0000000..e33c963
--- /dev/null
+++ "b/\345\217\266\346\200\235\346\200\235/20220523-\350\277\236\346\216\245\344\270\216\345\242\236\345\210\240\346\224\271.md"
@@ -0,0 +1,73 @@
+```mysql
+#建立student数据库
+create database student charset utf8;
+use student;
+#建立user信息表
+create table user(
+id int primary key auto_increment,
+name varchar(20) not null,
+score decimal(5,2) not null
+);
+```
+
+```php
+<?php
+error_reporting(E_ALL^E_WARNING);
+$con=mysqli_connect('localhost','root','root','student');
+if (!$con){
+    die("连接失败，出现错误".mysqli_connect_error());
+}else{
+    echo "连接成功";
+}
+echo "<br>";
+
+//添加数据
+mysqli_query($con,'set name utf8');//为了让添加的数据不会乱码
+$tt="insert into `user`(`name`,`score`) values('陈小龙',98.5),('陈大虫',75.5),('陈得胜',66)";
+$result=mysqli_query($con,$tt);
+if ($result){
+    echo "添加数据成功";
+}else{
+    die("添加数据失败，出现错误：".mysqli_error($con));
+}
+echo "<br>";
+
+//增加数据
+$zz="insert into `user`(`name`,`score`) value('张三',88)";
+$result=mysqli_query($con,$zz);
+if ($result){
+    echo "增加数据成功";
+}else{
+    die("增加数据失败，出现错误：".mysqli_error($con));
+}
+echo "<br>";
+
+//修改数据
+$xx="update `user` set `name`='李四' where id=1";
+$result=mysqli_query($con,$xx);
+if ($result){
+    echo "修改数据成功";
+}else{
+    die("修改数据失败，出现错误：".mysqli_error($con));
+}
+echo "<br>";
+
+//删除数据
+$ss="delete from `user` where id>3";
+$result=mysqli_query($con,$ss);
+if ($result){
+    echo "删除数据成功";
+}else{
+    die("删除数据失败，出现错误".mysqli_error($con));
+}
+echo "<br>";
+
+//查找数据
+$cc="select * from `user`";
+$result=mysqli_error($con,$cc) or die("查找数据失败，出现错误".mysqli_error($con));
+while ($aa=mysqli_fetch_assoc($result)){
+    echo $aa['id']." ".$aa['name']." ".$aa['score'];
+}
+
+```
+
-- 
Gitee