【php】3、学生管理系统-查看用户
浏览数：32 /
时间：2015年06月09日
<?php
include_once 'stuService.class.php';
session_start();
$name = $_SESSION['student_name'];
if($name == "")
{
header("Location: stu_login.php?error=1");
exit();
}
$pagesize = 20;
$pagenow = 1;
$pagecount = 0;
$service = new stuservice();
$pagecount = $service->getpagecount($pagesize);
if(!empty($_GET['pagenow']))
{
$pagenow=$_GET['pagenow'];
}
$stulist = $service->getstulist($pagesize, $pagenow);
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>学生成绩管理系统</title>
</head>
<body background="pic/bg.gif">
<form action="studentlist.php" method="get">
<table width="767" height="644" border="0" align="center">
<tr>
<td height="228" colspan="5" background="pic/top.gif" />
</tr>
<tr>
<td height="22" colspan="5" background="pic/in_01.gif" />
</tr>
<tr>
<td height="28" background="pic/in_20.gif" />
<td background="pic/in_20.gif">学生ID号</td>
<td background="pic/in_20.gif">学生姓名</td>
<td background="pic/in_20.gif">学生密码</td>
<td background="pic/in_20.gif"></td>
</tr>
<?php
for($i = 0; $i < count($stulist); ++$i)
{
$row=$stulist[$i]; //取出第i行数据,显示出来
$passwd = md5($row['stu_password']); //学生进来不能看到密码
?>
<tr>
<td background="pic/in_20.gif"></td>
<td background="pic/in_20.gif"><?php echo stripslashes($row['stu_id']);?></td>
<td background="pic/in_20.gif"><?php echo stripslashes($row['stu_name']);?></td>
<td background="pic/in_20.gif"><?php echo stripslashes($passwd); ?></td>
<td background="pic/in_20.gif"></td>
</tr>
<?php
}
echo "<tr>";
echo "<td background='pic/in_20.gif' />";
echo "<td background='pic/in_20.gif'>";
//显示上一页和下一页
if($pagenow > 1)
{
$prePage=$pagenow - 1;
echo "<a href='studentlist.php?pagenow=$prePage'>上一页</a> ";
echo "<a href='studentlist.php?pagenow=$prePage'>《《</a> ";
}
echo "</td>";
echo "<td background='pic/in_20.gif'>";
//中间打印10页选择
for($i=$pagenow; $i < $pagenow+10; ++$i)
{
if($i <= $pagecount)
{
echo "<a href='studentlist.php?pagenow=$i'>$i</a> ";
}
}
echo "</td>";
echo "<td background='pic/in_20.gif'>";
//下一页
if($pagenow < $pagecount)
{
$nextPage=$pagenow+1;
echo "<a href='studentlist.php?pagenow=$nextPage'>》》</a> ";
echo "<a href='studentlist.php?pagenow=$nextPage'>下一页</a> ";
}
echo "</td>";
echo "<td background='pic/in_20.gif'>";
echo "当前页$pagenow/共{$pagecount}页面";
echo "</td>";
echo "</tr>";
?>
<tr>
<td background="pic/in_20.gif"></td>
<td background='pic/in_20.gif'> 跳转到:<input type="text" name="pagenow" /></td>
<td background='pic/in_20.gif'><input type="submit" value="GO" /></td>
<td background="pic/in_20.gif"></td>
<td background="pic/in_20.gif"></td>
</tr>
</table>
</form>
</body>
</html>
stuservice类
<?php
//这个是对数据库中表student的操作
include_once 'mysql.class.php';
include_once 'student.class.php';
include_once 'confing.php';
class stuservice
{
//根据用户名和密码，查看个数
public function checkstunum($name, $password)
{
$mysql = new mysql(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);
$num=0;
$sql = "select count(*) from student where stu_name = '".$name."' and stu_password = '".$password."'";
//执行命令
$res = $mysql->execute_dql($sql);
$row=mysqli_fetch_row($res);
if($row)
{
$num=$row[0];
}
mysqli_free_result($res);
$mysql->close_connect();
return $num;
}
//根据每页的大小，和当前的页面查询出所有的学生
public function getstulist($pagesize,$pagenow)
{
$mysql = new mysql(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);
$sql="select * from student limit ".($pagenow-1)*$pagesize.",$pagesize";
$res=$mysql->execute_dql($sql);
$arr=array();
$i=0;
while($row = mysqli_fetch_assoc($res))
{
$arr[$i++]=$row;
}
mysqli_free_result($res);
$mysql->close_connect();
return $arr;
}
//得到总页数
public function getpagecount($pagesize)
{
$mysql = new mysql(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);
$sql="select count(stu_id) from student";
$res=$mysql->execute_dql($sql);
$i=0;
$row = mysqli_fetch_row($res);
if($row)
{
$rowcount=$row[0];
}
$pagecount=ceil($rowcount/$pagesize); //返回不小于 value 的下一个整数，value 如果有小数部分则进一位。
mysqli_free_result($res);
$mysql->close_connect();
return $pagecount;
}
//根据学生姓名得到相应数据
public function getstu($name)
{
$stu = new student();
$mysql = new mysql(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);
$sql="select * from student where stu_name='".$name."'";
$res=$mysql->execute_dql($sql);
if($row = mysqli_fetch_assoc($res))
{
$stu->setStu_id($row['stu_id']);
$stu->setStu_name($row['stu_name']);
$stu->setStu_password($row['stu_password']);
}
mysqli_free_result($res);
$mysql->close_connect();
return $stu;
}
//根据id号获取user
public function getstubyid($id)
{
$stu = new student();
$mysql = new mysql(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);
$sql="select * from student where stu_id='".$id."'";
$res=$mysql->execute_dql($sql);
if($row = mysqli_fetch_assoc($res))
{
$stu->setStu_id($row['stu_id']);
$stu->setStu_name($row['stu_name']);
$stu->setStu_password($row['stu_password']);
}
mysqli_free_result($res);
$mysql->close_connect();
return $stu;
}
//根据得到的对象修改数据库中的值
public function update(student $stu)
{
$mysql = new mysql(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);
$sql="update student set stu_name='".$stu->getStu_name()."',stu_password='".$stu->getStu_password()."'
where stu_id=".$stu->getStu_id();
$b = $mysql->execute_dml($sql);
// if($b == 1)
// {
// return true;
// }
return $b;
}
//删除用户
public function delete(student $stu)
{
$mysql = new mysql(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);
$sql = "delete from student where stu_id=".$stu->getStu_id().";";
$b = $mysql->execute_dml($sql);
return $b;
}
}
?>mysql类
<?php
// include_once 'confing.php';
class mysql extends mysqli
{
// public $link;
// public $db_host = DB_HOST;
// public $db_user = DB_USER;
// public $db_password = DB_PASSWORD;
// public $db_name = DB_NAME;
public function __construct($host, $user, $pass, $db)
{
parent::__construct($host, $user, $pass, $db);
if (mysqli_connect_error()) {
die('Connect Error (' . mysqli_connect_errno() . ') '
. mysqli_connect_error());
}
// $this->link = new mysqli($this->db_host, $this->db_user, $this->db_password, $this->db_name);
// if(!$this->link){
// die("连接失败".mysql_error());
// }
//mysql_select_db($this->dbname,$this->link);
}
//执行SQL语句得到结果集，查询语句
public function execute_dql($sql)
{
$res = $this->query($sql) or die(mysqli_error($this));
return $res;
}
//执行SQLdml语句插入，更新，删除
public function execute_dml($sql)
{
$b = $this->query($sql) or die(mysqli_error($this));
if(!$b)
{
return 0;
}
else
{
if($this->affected_rows > 0) //如果收影响的行数大于0
{
return 1; //OK了
}
else
{
return 2; //没有行收到影响
}
}
}
//关闭连接
public function close_connect()
{
if(!empty($this))
$this->close();
}
}
?>student类
<?php
class student
{
private $stu_id;
private $stu_name;
private $stu_password;
/**
* @return the $stu_id
*/
public function getStu_id()
{
return $this->stu_id;
}
/**
* @return the $stu_name
*/
public function getStu_name()
{
return $this->stu_name;
}
/**
* @return the $stu_password
*/
public function getStu_password()
{
return $this->stu_password;
}
/**
* @param field_type $stu_id
*/
public function setStu_id($stu_id)
{
$this->stu_id = $stu_id;
}
/**
* @param field_type $stu_name
*/
public function setStu_name($stu_name)
{
$this->stu_name = $stu_name;
}
/**
* @param field_type $stu_password
*/
public function setStu_password($stu_password)
{
$this->stu_password = $stu_password;
}
}
?> config.php配置数据库
<?php
//用define定义常量
//连接服务器
define('DB_HOST', 'localhost');
//连接数据库的账号
define('DB_USER', 'root');
//连接数据库的密码
define('DB_PASSWORD', 'xiaofeng2015');
//连接数据库的名字
define('DB_NAME', 'studentmanage');
//
?>
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