php增删改查示例
创建数据库和用户 CREATE DATABASE mysite; grant all on mysite.* to mysite@localhost identified by '123456'; flush privileges;
create database onbing; grant all on onbing.* to onbing@localhost identified by 'h123TYBcd'; flush privileges;
对于已存在的数据库和用户，使用如下方法： 首先确认数据库(为空)和用户； use mysql select user from user where User='onbing'; update user set password=password('h123TYBcd') where User='onbing'; grant all on onbing.* to onbing@localhost; flush privileges;
在本地hosts文件中添加dns解析 192.168.1.24 www.onbing.com
建表： CREATE TABLE user(id int(5) DEFAULT '1' NOT NULL AUTO_INCREMENT, name varchar(20), city varchar(20), postcode varchar(10),address varchar(100), password varchar(10), level tinyint(2) DEFAULT '0',right tinyint(2),email varchar(40), PRIMARY KEY (id), UNIQUE id (id));
CREATE TABLE news(id int(5) DEFAULT '1' NOT NULL , title varchar(100), dates datetime, contents varchar(200), PRIMARY KEY (id), UNIQUE id (id)); alter table news modify id integer auto_increment;
INSERT INTO myuser VALUES (1,'王友','北京','100083','北京市海淀区学院路',111,0,0,'[email protected]'); INSERT INTO myuser VALUES (2,'金风','武汉','430071','武汉市武昌区水果湖',111,0,0,'[email protected]'); INSERT INTO myuser VALUES (3,'常丽','襄樊','441021','襄樊市襄城区南街',111,0,0,'[email protected]');
1.链接数据库通用方法：conn.php
2.增加 add.php
3.删除 del.php
4.改 edit.php页面
alert('更新成功'); location.href='select.php'"; echo"更新成功"; } ?> 5.查询页面 select.php
添加内容
标题: 编辑｜｜删除
1.查寻全部
下面是用户数据库的所有内容：
\n"; echo "2.根据id查询
", $myrow["id"]); printf("2.姓名: %s\n
", $myrow["name"]); printf("3.城市: %s\n
", $myrow["city"]); printf("4.邮编: %s\n
", $myrow["postcode"]); printf("5.住址: %s\n
", $myrow["address"]); printf("6.等级：%s\n
", $myrow["level"]); printf("7.邮件地址: %s\n
", $myrow["email"]); printf(" 继续查询 ", $PATH_INFO); } else { $result = MySQL_query("SELECT * FROM user",$db); if ($myrow = MySQL_fetch_array($result)) { printf("
请选择要查询的用户：
"); do { printf("%s%s\n", $myrow["id"],$PATH_INFO,$myrow["id"], $myrow["name"]); } while ($myrow = MySQL_fetch_array($result)); } else { echo "对不起，没有数据！"; } } ?>
3.更新
\n", $myrow["id"],$PATH_INFO,$myrow["id"], $myrow["name"]); } while ($myrow = MySQL_fetch_array($result)); } else { echo "对不起！数据库中没有记录"; } } else { if ($submit) { $sql = "UPDATE user SET name='$name',city='$city', address='$address',email='$email' WHERE id=$id"; $result = MySQL_query($sql); echo "谢谢！数据更改完成\n"; } else { $sql = "SELECT * FROM user WHERE id=$id"; $result = MySQL_query($sql); $myrow = MySQL_fetch_array($result); //以下不是PHP的部分 ?>
请对用户的信息进行修改：
4.增加删除记录
"; } else { printf("
删除一个用户的所有信息：
"); $result = MySQL_query("SELECT * FROM myuser",$db); while ($myrow = MySQL_fetch_array($result)) { printf("%s:%s\n", $myrow["id"],$PATH_INFO, $myrow["id"], $myrow["name"]); } ?>