From a5f392dd690d86cd94ca2048c027b6f5bf611efc Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9D=A8=E9=91=AB=E4=BB=AA?= <3355466010@qq.com> Date: Mon, 23 May 2022 15:57:09 +0000 Subject: [PATCH 1/4] 22 --- ...hp\346\225\260\346\215\256\345\272\223.md" | 49 +++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 "\346\235\250\351\221\253\344\273\252/20220523-php\346\225\260\346\215\256\345\272\223.md" diff --git "a/\346\235\250\351\221\253\344\273\252/20220523-php\346\225\260\346\215\256\345\272\223.md" "b/\346\235\250\351\221\253\344\273\252/20220523-php\346\225\260\346\215\256\345\272\223.md" new file mode 100644 index 0000000..94907d3 --- /dev/null +++ "b/\346\235\250\351\221\253\344\273\252/20220523-php\346\225\260\346\215\256\345\272\223.md" @@ -0,0 +1,49 @@ +-- Mysql中新建个student数据库，里面有个学生信息表user +create database Student charset utf8; +use Student; +create table user( +id int primary key auto_increment, +name varchar(10) not null, +score decimal(3,1) not null +); +// 完成PHP访问数据库五步。使用mysqli扩展对mysql数据库中的学生信息表进行增删改查。 + +"; +}else{ + echo "添加数据失败
"; +} +//删除数据 +$sql2= "delete from `user` where `id`=10"; +$res2= mysqli_query($con,$sql2); +if ($res2){ + echo "删除成功
"; +}else{ + echo "删除失败
"; +} +//修改数据 +$sql3= "update `user` set `name`='小明' where `id`=12 "; +$res3 = mysqli_query($con,$sql3); +if ($res3){ + echo "修改成功
"; +}else{ + echo "修改失败
"; +} +//查找数据 +$sql4 = "select * from `user`"; +$res4 = mysqli_query($con,$sql4) or die("查找失败
"); + + +while($a=mysqli_fetch_assoc($res4) ){ + echo $a['id']." ".$a['name']." ".$a['score']."
"; +} \ No newline at end of file -- Gitee From 25e7aa426c5b76636047f857032bdc4a37e2d2b1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9D=A8=E9=91=AB=E4=BB=AA?= <3355466010@qq.com> Date: Tue, 24 May 2022 04:31:03 +0000 Subject: [PATCH 2/4] =?UTF-8?q?update=20=E6=9D=A8=E9=91=AB=E4=BB=AA/202205?= =?UTF-8?q?23-php=E6=95=B0=E6=8D=AE=E5=BA=93.md.?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- ...hp\346\225\260\346\215\256\345\272\223.md" | 37 +++++++++++-------- 1 file changed, 21 insertions(+), 16 deletions(-) diff --git "a/\346\235\250\351\221\253\344\273\252/20220523-php\346\225\260\346\215\256\345\272\223.md" "b/\346\235\250\351\221\253\344\273\252/20220523-php\346\225\260\346\215\256\345\272\223.md" index 94907d3..83356c3 100644 --- "a/\346\235\250\351\221\253\344\273\252/20220523-php\346\225\260\346\215\256\345\272\223.md" +++ "b/\346\235\250\351\221\253\344\273\252/20220523-php\346\225\260\346\215\256\345\272\223.md" @@ -1,3 +1,4 @@ +```sql -- Mysql中新建个student数据库，里面有个学生信息表user create database Student charset utf8; use Student; @@ -6,6 +7,8 @@ id int primary key auto_increment, name varchar(10) not null, score decimal(3,1) not null ); +``` +```php // 完成PHP访问数据库五步。使用mysqli扩展对mysql数据库中的学生信息表进行增删改查。 "; } +echo "
"; //删除数据 -$sql2= "delete from `user` where `id`=10"; -$res2= mysqli_query($con,$sql2); -if ($res2){ - echo "删除成功
"; +$sc= "delete from `user` where `id`=3"; +$result1= mysqli_query($conn,$sc); +if ($result1){ + echo "删除数据成功 "; }else{ - echo "删除失败
"; + echo "删除数据失败 "; } +echo"
"; //修改数据 -$sql3= "update `user` set `name`='小明' where `id`=12 "; -$res3 = mysqli_query($con,$sql3); -if ($res3){ - echo "修改成功
"; +$xiugai= "update `user` set `score`='55' where `id`=2 "; +$result2 = mysqli_query($conn,$xiugai); +if ($result2){ + echo "修改数据成功"; }else{ - echo "修改失败
"; + echo "修改数据失败"; } +echo "
"; //查找数据 -$sql4 = "select * from `user`"; -$res4 = mysqli_query($con,$sql4) or die("查找失败
"); - - -while($a=mysqli_fetch_assoc($res4) ){ +$chazhao = "select * from `user` where 'score'=66 "; +$result3 = mysqli_query($conn,$chazhao) or die("查找数据失败
"); +while($a=mysqli_fetch_assoc($result3) ){ echo $a['id']." ".$a['name']." ".$a['score']."
"; -} \ No newline at end of file +} +``` -- Gitee From 0652fe6b6de50afad1c9e60ac4c183c927c7e11e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9D=A8=E9=91=AB=E4=BB=AA?= <3355466010@qq.com> Date: Tue, 24 May 2022 04:32:00 +0000 Subject: [PATCH 3/4] =?UTF-8?q?update=20=E6=9D=A8=E9=91=AB=E4=BB=AA/202205?= =?UTF-8?q?23-php=E6=95=B0=E6=8D=AE=E5=BA=93.md.?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../20220523-php\346\225\260\346\215\256\345\272\223.md" | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git "a/\346\235\250\351\221\253\344\273\252/20220523-php\346\225\260\346\215\256\345\272\223.md" "b/\346\235\250\351\221\253\344\273\252/20220523-php\346\225\260\346\215\256\345\272\223.md" index 83356c3..f15df27 100644 --- "a/\346\235\250\351\221\253\344\273\252/20220523-php\346\225\260\346\215\256\345\272\223.md" +++ "b/\346\235\250\351\221\253\344\273\252/20220523-php\346\225\260\346\215\256\345\272\223.md" @@ -20,8 +20,8 @@ if (!$conn){ } $sql="insert into `user` value (1 ,'陈小龙','98.5'),(2 ,'吴大虫','75.5'),(3 ,'陈得胜','66')"; //增加数据 -$resu1t = mysqli_query($conn,$sql); -if ($resu1t){ +$result = mysqli_query($conn,$sql); +if ($result){ echo "添加数据成功
"; }else{ echo "添加数据失败
"; -- Gitee From dfd5bf7f7d2b967cca22295e4b50b2093039b744 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9D=A8=E9=91=AB=E4=BB=AA?= <3355466010@qq.com> Date: Tue, 24 May 2022 04:32:28 +0000 Subject: [PATCH 4/4] =?UTF-8?q?update=20=E6=9D=A8=E9=91=AB=E4=BB=AA/202205?= =?UTF-8?q?23-php=E6=95=B0=E6=8D=AE=E5=BA=93.md.?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../20220523-php\346\225\260\346\215\256\345\272\223.md" | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git "a/\346\235\250\351\221\253\344\273\252/20220523-php\346\225\260\346\215\256\345\272\223.md" "b/\346\235\250\351\221\253\344\273\252/20220523-php\346\225\260\346\215\256\345\272\223.md" index f15df27..a053631 100644 --- "a/\346\235\250\351\221\253\344\273\252/20220523-php\346\225\260\346\215\256\345\272\223.md" +++ "b/\346\235\250\351\221\253\344\273\252/20220523-php\346\225\260\346\215\256\345\272\223.md" @@ -1,7 +1,7 @@ ```sql -- Mysql中新建个student数据库，里面有个学生信息表user -create database Student charset utf8; -use Student; +create database student charset utf8; +use student; create table user( id int primary key auto_increment, name varchar(10) not null, -- Gitee