From d36f36da9efe8620a1de65e60688675b500f63bc Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9D=8E=E5=AD=90=E4=BA=91?= <3329280162@qq.com> Date: Wed, 25 May 2022 18:53:07 +0800 Subject: [PATCH 1/2] =?UTF-8?q?=E4=BD=9C=E4=B8=9A?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- ...20523-php\346\223\215\344\275\234mysql.md" | 65 +++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 "\346\235\216\345\255\220\344\272\221/20220523-php\346\223\215\344\275\234mysql.md" diff --git "a/\346\235\216\345\255\220\344\272\221/20220523-php\346\223\215\344\275\234mysql.md" "b/\346\235\216\345\255\220\344\272\221/20220523-php\346\223\215\344\275\234mysql.md" new file mode 100644 index 0000000..f846f34 --- /dev/null +++ "b/\346\235\216\345\255\220\344\272\221/20220523-php\346\223\215\344\275\234mysql.md" @@ -0,0 +1,65 @@ +# 作业 + +```mysql +create database student charset utf8; +use student; +create table user( + id int primary key auto_increment, + name varchar(20) not null, + score decimal(6,3) not null +) +``` + +```php +"; +}else { + echo "添加失败".mysqli_error($link); +} +//删数据 +$c="delete from `user`where `id`=2"; +mysqli_query($link,$c); +$b=mysqli_affected_rows($link); +if($b==0){ + echo "没删数据"; +}else{ + echo "删了".$b; +} + + +//改数据 +$d="update `user`set`name`='陈得胜'"; +mysqli_query($link,$d); + + +//查数据 +$e="select * from `user` "; +$f=mysqli_query($link,$e); +echo"
排名 | +姓名 | +分数 | +
---|---|---|
{$arr['id']} | {$arr['name']} | {$arr['score']} |