From 01b648af4d69e2a3c02bbc51e409a339e7401241 Mon Sep 17 00:00:00 2001
From: unknown <3113368166@qq.com>
Date: Mon, 23 May 2022 23:39:47 +0800
Subject: [PATCH] text

---
 .../20220523\344\275\234\344\270\232.md"      | 54 +++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 "\350\260\242\345\250\237/20220523\344\275\234\344\270\232.md"

diff --git "a/\350\260\242\345\250\237/20220523\344\275\234\344\270\232.md" "b/\350\260\242\345\250\237/20220523\344\275\234\344\270\232.md"
new file mode 100644
index 0000000..c6097c5
--- /dev/null
+++ "b/\350\260\242\345\250\237/20220523\344\275\234\344\270\232.md"
@@ -0,0 +1,54 @@
+```mysql
+drop database student;
+
+create database student charset utf8;
+use student;
+create table user(
+id int primary key auto_increment,
+sname varchar(20) not null,
+score decimal(3,1) not null
+);
+```
+
+```php
+<?php
+$conn=mysqli_connect('127.0.0.1','root','123456','student');//连接
+
+
+if (!$conn){
+    die("连接失败了");
+}
+
+mysqli_query($conn,'set names utf8');
+
+//题目条件数据输入
+//$sql="insert into `user`(`id`,`sname`,`score`) values ('1','陈小龙','98.5'),
+//('2','吴大虫','75.5'),
+//('3','陈得胜','66')";
+//
+//mysqli_query($conn,$sql) or die("数据输入错误").mysqli_error($conn);
+
+//增
+
+//$zeng="insert into `user`(`sname`,`score`) values ('胡汤圆','78');
+//mysqli_query($conn,$zeng) or die("数据增加错误").mysqli_error($conn);
+//
+//  //删
+//  $shang="delete from `user` where `id`='2';
+//mysqli_query($conn,$shang) or die("数据删除错误").mysqli_error($conn);
+//
+////改
+//$gai="update `user` set `name`="虎有" where `id`=`3`;
+//    mysqli_query($conn,$gai) or die("数据修改错误").mysqli_error($conn);
+//
+//    //查
+//    $cha="select * from `user`";
+//        $result=mysqli_query($conn,$cha) or die("数据查看错误").mysqli_error($conn);
+
+    while($a =mysqli_fetch_row( $result)){
+        echo $a[0]."=".$a[1].$a[2]."<br>";
+    }
+```
+
+# 
+
-- 
Gitee