Posted in PHP onMarch 21, 2010
1 建立数据库表:
create database club; create table member( id int(11) not null auto_increment, no varchar(5) not null, name varchar(10) not null, age int(2) not null, level varchar(10) not null, sex tinyint(1) not null, date datetime not null, primary key(id) )engine=MyISAM default charset=GB2312; insert into member(id,no,name,age,level,sex,date)values (1,'A001','wanxia',30,'hj',1,'2008-04-02 00:00:00'), (2,'C022','liyan',29,'zs',1,'2007-05-31 00:00:00'), (3,'A006','zhangyan',36,'hj',1,'2007-06-20 00:00:00'), (4,'B052','luanying',42,'bj',1,'2007-02-12 00:00:00'), (5,'A007','duxiang',26,'hj',2,'2008-03-26 00:00:00'), (6,'C060','liuyu',38,'zs',1,'2008-10-16 00:00:00');
2 读取数据
2.1 建立01.php
代码
<html> <head> <meta http-equiv="Content-Type" content="text/html;charset=GB2312"/> <title>会员列表</title> </head> <?php $link=mysql_connect("localhost","root","123"); //连接mysql服务器 $db=mysql_select_db("club"); //选择数据库 mysql_query("set names utf8",$link); //设定编码方式 $sql="Select * from member"; $result=mysql_query($sql,$link); //执行select查询 $num=mysql_num_rows($result); //获取记录查询 ?> <body> <h1>健身俱乐部 会员名册</h1> <br /> 点击姓名可查看该会员详细资料,现有会员<?php echo $num ?>人。 <br /> <?php if($num>0) { ?> <table border="1" cellpadding="1" cellspacing="1"> <tr> <td>序号</td> <td>姓名</td> <td>性别</td> </tr> <?php while($row=mysql_fetch_array($result)) { echo "<tr><td>".$row['id']."</td><td><a href=member.php?name=" .$row['name'].">".$row['name']."</a></td><td>" .($row['sex']==1?"女":"男")."</td></tr>"; } ?> </table> <?php } else { echo "俱乐部尚未发展会员。"; } ?> </body> </html>
2.2 建立member.php
<html> <head> <meta http-equiv="Content-Type" content="text/html;charset=GB2312"/> <title>会员详细资料</title> </head> <?php $link=mysql_connect("localhost","root","123"); //连接mysql服务器 $db=mysql_select_db("club"); //选择数据库 mysql_query("set names utf8",$link); //设定编码方式 $sql="select no,name,sex,age,level,date_format(date,'%Y-%c-%d') as join_date from member " ."where name='".trim($_GET['name'])."'"; $result=mysql_query($sql,$link); //执行在select查询 ?> <body> <h1>健身俱乐部 会员详细资料</h1> <?php if($row=mysql_fetch_array($result)) { echo "编号:".$row['no']."<br />"; echo "姓名:".$row['name']."<br />"; echo "性别:".($row['sex']==1?"女":"男")."<br />"; echo "年龄:".$row['age']."<br />"; echo "级别:".$row['level']."<br />"; echo "加入:".$row['join_date']."<br />"; } ?> </body> </html>
3 修改数据
3.1 建立level.php(修改数据)
<html> <head> <meta http-equiv="Content-Type" content="text/html;charset=GB2312" /> <title>俱乐部优惠活动</title> </head> <body> <h1>俱乐部会员统计表</h1> <?php $link=mysql_connect("localhost","root","123"); //连接mysql服务器 $db=mysql_select_db("club"); //选择数据库 mysql_query("set name utf8",$link); //设定编码方式 $sql="Select level,count(*) as num from member group by level"; $result=mysql_query($sql,$link); //执行select查询 while($row=mysql_fetch_array($result)) { switch($row['level']){ case 'bj': echo "等级:白金会员 人数:".$row['num']."<br />"; break; case 'hj': echo "等级:黄金会员 人数:".$row['num']."<br />"; break; default: echo "等级:钻石会员 人数:".$row['num']."<br />"; } } ?> <form action="up_level.php" name="level" method="post"> 会员优惠升级:从 <select name="old_level"> <option value="hj">黄金会员</option> <option value="bj">白金会员</option> </select> 升级至 <select name="new_level"> <option value="bj">白金会员</option> <option value="zs">钻石会员</option> </select> <input type="submit" value="确定"/> </form> </body> </html>
3.2 建立up_level.php
<html> <head> <meta http-equiv="Content-Type" content="text/html;charset=GB2312" /> <title>俱乐部优惠活动</title> </head> <body> <?php $link=mysql_connect("localhost","root","123"); //连接mysql服务器 $db=mysql_select_db("club"); //选择数据库 mysql_query("set name utf8",$link); //设定编码方式 $sql="update member set level='".trim($_POST['new_level']) ."' where level='".trim($_POST['old_level'])."'"; $result=mysql_query($sql,$link); //执行select查询 echo mysql_affected_rows($link)."人 从"; switch(trim($_POST['old_level'])){ case 'bj': echo " 白金会员 " ; break; case 'hj': echo " 黄金会员 "; break; default: echo " 钻石会员 "; } echo "成功升级到"; switch(trim($_POST['new_level'])){ case 'bj': echo " 白金会员 " ; break; case 'hj': echo " 黄金会员 "; break; default: echo " 钻石会员 "; } ?> </body> </html>
4 添加数据
4.1 建立add_member.php
<html> <meta http-equiv="Content-Type" content="text/html;charset=GB2312"/> <title>新增会员</title> <body> <h1>新加入会员</h1> <form action="newmember.php" method="post" name="add_member"> 编号:<input type="text" name="no" width="40"/><br /> 姓名:<input type="text" name="name" width="40"/><br /> 性别: <input type="radio" name="sex" value="1" />女 <input type="radio" name="sex" value="2" />男<br /> 年龄:<input type="text" name="age" width="40" /><br /> 级别: <select name="level"> <option value="hj">黄金会员</option> <option value="bj">白金会员</option> <option value="zs">钻石会员</option> </select><br /> <input type="submit" value="确定" /> </form> </body> </html>
4.2 建立newmember.php
<html> <head> <meta http-equiv="Content-Type" content="text/html;charset=GB2312" /> <title>添加会员</title> </head> <body> <?php $link=mysql_connect("localhost","root","123"); //连接mysql服务器 $db=mysql_select_db("club"); //选择数据库 mysql_query("set names GB2312",$link); //设定编码方式 $sql="Insert member(no,name,sex,age,level,date) values('" .trim($_POST['no'])."','".trim($_POST['name'])."','" .trim($_POST['sex'])."','".trim($_POST['age'])."','" .trim($_POST['level'])."',now())"; $result=mysql_query($sql,$link); //执行select查询 $m_id=mysql_insert_id($link); //得到新插入会员记录的id if(trim($_POST['level'])=="hj") //判断新会员优惠 { $sql="Update member set level='bj' where id='".$m_id."'"; $result=mysql_query($sql,$link); //执行会员升级优惠 $text="已享受优惠升级至白金会员。"; } $sql="Select *,date_format(date,'%Y-%c-%d') as join_date from member " ."where id='".$m_id."'"; $result=mysql_query($sql,$link); //执行select查询 if($row=mysql_fetch_array($result)) { echo "新会员资料:<br />"; echo "编号:".$row['no']."<br />"; echo "姓名:".$row['name']."<br />"; echo "性别:".($row['sex']==1?"女":"男"."<br />"); echo "年龄:".$row['age']."<br />"; echo "级别:".$row['level']."<br />"; echo "加入:".$row['join_date']."<br />"; } echo "新会员".$row['name']."添加成功".$text; ?> </body> </html>
5 创建类数据库连接
5.1 建立cls_mysql.php类文件
<?php class cls_mysql { protected $link_id; function __construct($dbhost,$dbuser,$dbpw,$dbname='',$charset='GB2312') { if(!($this->link_id=mysql_connect($dbhost,$dbuser,$dbpw))) { $this->ErrorMsg("Can't pConnect MySQL Server($dbhost)!"); } mysql_query("SET NAMES ".$charset,$this->link_id); if($dbname) { if(mysql_select_db($dbname,$this->link_id)===false) { $this->ErrorMsg("Can't slect MYSQL database($dbname)!"); return false; } else { return true; } } } public function select_database($dbname) { return mysql_select_db($dbname,$this->link_id); } public function fetch_array($query,$result_type=MYSQL_ASSOC) { return mysql_fetch_array($query,$result_type); } public function query($sql) { return mysql_query($sql,$this->link_id); } public function affected_rows() { return mysql_affected_rows($this->link_id); } public function num_rows($query) { return mysql_num_rows($query); } public function insert_id() { return_insert_id($this->link_id); } public function selectLimit($sql,$num,$start=0) { if($start==0) { $sql.=' LIMIT '.$num; } else { $sql.=' LIMIT '.$start.', '.$num; } return $this->query($sql); } public function getOne($sql,$limited=false) { if($limited=true) { $sql=trim($sql.' LIMIT 1'); } $res=$this->query($sql); if($res!=false) { $row=mysql_fetch_row($res); return $row[0]; } else { return false; } } public function getAll($sql) { $res=$this->query($sql); if($res!==false) { $arr=array(); while($row=mysql_fetch_assoc($res)) { $arr[]=$row; } return $arr; } else { return false; } } function ErrorMsg($message='',$sql='') { if($message) { echo "<b> error info</b>:$message\n\n"; } else { echo "<b>MySQL server error report:"; print_r($this->error_message); } exit; } } ?>
5.2 建立test.php
<?php include("cls_mysql.php"); ?> <html> <head> <meta http-equiv="Content-Type" content="text/html;charset=GB2312" /> <title>Mysql类库测试</title> </head> <body> <?php $sql="Select * from member"; $db=new cls_mysql('localhost','root','123','club','GB2312'); $result=$db->selectLimit($sql,'3'); //从数据库中返回3个会员资料 if($result) { while($row=$db->fetch_array($result)) { echo "会员编号: " .$row['no'].",姓名:".$row['name']."<br />"; } } ?> </body> </html>
6 总结
6.1 mysql_connect():建立与MySQL服务器的连接
6.2 mysql_select_db():选择数据库
6.3 mysql_query():执行数据库查询
6.4 mysql_fetch_array():获取数据库记录
6.5 mysql_num_rows():获取查询得到的记录数
6.6 mysql_affected_rows():最近一次操作影响到的行数
6.7 mysql_insert_id():最近一次插入记录的ID值
PHP5与MySQL数据库操作常用代码 收集
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