分享PHP+MySQL投票系统的设计和实现

--
-- 表的结构 `count_voting`
--
DROP TABLE IF EXISTS `count_voting`;
CREATE TABLE IF NOT EXISTS `count_voting` (
`SelectName` varchar(40) NOT NULL,
`LabelName` varchar(40) NOT NULL,
`CountVotes` bigint(20) unsigned NOT NULL,
UNIQUE KEY `SelectName` (`SelectName`),
KEY `CountVotes` (`CountVotes`),
KEY `CountVotes_2` (`CountVotes`),
KEY `CountVotes_3` (`CountVotes`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='投票统计表';
-- --------------------------------------------------------
--
-- 表的结构 `ip_votes`
--
DROP TABLE IF EXISTS `ip_votes`;
CREATE TABLE IF NOT EXISTS `ip_votes` (
`ID` bigint(20) unsigned NOT NULL auto_increment COMMENT '投票人序号：自增',
`IP` varchar(15) NOT NULL COMMENT '投票人IP',
`Location` varchar(40) NOT NULL COMMENT '投票人位置',
`VoteTime` datetime NOT NULL,
`SelectName` varchar(40) NOT NULL,
PRIMARY KEY (`ID`),
KEY `ID` (`ID`),
KEY `SelectName` (`SelectName`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=4 ;
--
-- 触发器 `ip_votes`
--
DROP TRIGGER IF EXISTS `vote_count_after_insert_tr`;
DELIMITER //
CREATE TRIGGER `vote_count_after_insert_tr` AFTER INSERT ON `ip_votes`
FOR EACH ROW UPDATE count_voting SET CountVotes = CountVotes + 1 WHERE SelectName = NEW.SelectName
//
DELIMITER ;
-- --------------------------------------------------------
--
-- 表的结构 `user`
--
DROP TABLE IF EXISTS `user`;
CREATE TABLE IF NOT EXISTS `user` (
`name` varchar(10) NOT NULL COMMENT '管理员用户名',
`passwd` char(32) NOT NULL COMMENT '登录密码MD5值'
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='用户表';
--
-- 转存表中的数据 `user`
--
INSERT INTO `user` (`name`, `passwd`) VALUES
('ttxi', '700469ca1555900b18c641bf7b0a1fa1'),
('jitttanwa', 'adac5659956d68bcbc6f40aa5cd00d5c');
--
-- 限制导出的表
--
--
-- 限制表 `ip_votes`
--
ALTER TABLE `ip_votes`
ADD CONSTRAINT `ip_votes_ibfk_1` FOREIGN KEY (`SelectName`) REFERENCES `count_voting` (`SelectName`) ON DELETE CASCADE ON UPDATE CASCADE;

/**
* 操作数据库
* 封装PDO，使其方便自己的操作
*/
class OperatorDB
{
//连接数据库的基本信息
private $dbms='mysql'; //数据库类型,对于开发者来说，使用不同的数据库，只要改这个.
private $host='localhost'; //数据库主机名
private $dbName='voting'; //使用的数据库
private $user='voting'; //数据库连接用户名
private $passwd='voting'; //对应的密码
private $pdo=null;
public function __construct()
{
//dl("php.html" target="_blank">php_pdo.dll");
//dl("php_pdo_mysql.dll");
$this->dsn="$this->dbms:host=$this->host;dbname=$this->dbName";
try
{
$this->conn=new PDO($this->dsn,$this->user,$this->passwd);//初始化一个PDO对象，就是创建了数据库连接对象$db
}
catch(PDOException $e)
{
die("<br/>数据库连接失败(creater PDO Error！): ".$e->getMessage()."<br/>");
}
}
public function __destruct()
{
$this->pdo = null;
}
public function exec($sql)
{
}
public function query($sql)
{
}
}

<?php
require_once 'OperatorDB.php';
class OperatorVotingDB
{
private $odb;
public function __construct()
{
$this->odb = new OperatorDB();
}
public function __destruct()
{
$this->odb = null;
}
/**
* 清空Voting数据中的所有表
*
* 调用数据库操作类，执行clear数据库的操作
*/
public function clearTables()
{
$sqls = array("TRUNCATE ip_votes;","TRUNCATE count_voting;");
$this->odb->exec($sqls[0]);
$this->odb->exec($sqls[1]);
}
/**
* 重置count_voting表中的CountValues字段为0
*
*/
public function resetCountValues()
{
$sql = "UPDATE count_voting SET CountVotes = 0;";
$this->odb->exec($sql);
}
/**
* 投票
* 将信息写入ip_votes表
* @param type $ip
* @param type $loc
* @param type $time
* @param type $name
*/
public function vote($ip,$loc,$name)
{
$sql = "INSERT INTO ip_votes VALUES (NULL, '$ip', '$loc', NOW(), '$name')";
$subsql = "SELECT MAX(to_days(VoteTime)) FROM ip_votes WHERE IP='$ip'";
$stm = $this->odb->query($subsql);
if (count($row=$stm->fetchAll())==1)
{
$now = date("Y-m-d H:i:s");
$subsql = "SELECT to_days('$now');";
$stm = $this->odb->query($subsql)->fetch();
$time = $stm[0];//使用mysql计算出的today时间
// echo $time."<br>";
// echo $row[0][0];
if ($time-$row[0][0]<1)//表中最大的时间和现在的时间$time比较
{
echo "投票失败，相同ip需要隔一天才能投票";
return;
}
}
// echo $sql;
echo "投票成功!";
$this->odb->exec($sql);
}
/**
* 添加SelectName字段的行
*
* @param string $name
* @param string $label
* @param int $count
*/
public function addSelectName($name, $label, $count=0)
{
$sql = "INSERT INTO count_voting VALUES ('$name', '$label', $count);";
$this->odb->exec($sql);
}
/**
* 获取总投票情况,按票数排序的结果
*
* 按CountVotes字段排序，返回count_voting表
*
* @param int $n
*
*/
public function getVotesSortByCount($n=-1)
{
$sql = "SELECT * FROM count_voting ORDER BY CountVotes DESC LIMIT 0 , $n;";
if (-1 == $n)
{
$sql = "SELECT * FROM count_voting ORDER BY CountVotes DESC;";
}
// echo $sql;
return $this->odb->query($sql);
}
/**
* 获取投票情况,按票数排序并按标签分组的结果
*
* 按CountVotes字段排序并按LabelName字段分组，返回count_voting表
*/
public function getVotesGroupByLabel()
{
$sql = "SELECT * FROM count_voting ORDER BY LabelName DESC;";
// echo $sql;
return $this->odb->query($sql);
}
}
?>

<?php
/**
* 页面跳转函数
* 使用js实现
* @param string $url
*/
function goToPgae($url)
{
echo "<script language='javascript' type='text/javascript'>";
echo "window.location.href='$url'";
echo "</script>";
}
function jsFunc($fun, $arg=null)
{
echo "<script language='javascript' type='text/javascript'>";
echo $fun."('$arg');";
echo "</script>";
}
function jsFunc3($fun, $arg1=null,$arg2=null,$arg3=null)
{
echo "<script language='javascript' type='text/javascript'>";
echo $fun."('$arg1','$arg2','$arg3');";
echo "</script>";
//echo $fun."('$arg1','$arg2','$arg3');";
}
function isLoginNow()
{
if ($_COOKIE["user"]=='')
{
return false;
}
return true;
}
function getClientIP()
{
if ($_SERVER["HTTP_X_FORWARDED_FOR"])
{
if ($_SERVER["HTTP_CLIENT_IP"])
{
$proxy = $_SERVER["HTTP_CLIENT_IP"];
}
else
{
$proxy = $_SERVER["REMOTE_ADDR"];
}
$ip = $_SERVER["HTTP_X_FORWARDED_FOR"];
}
else
{
if ($_SERVER["HTTP_CLIENT_IP"])
{
$ip = $_SERVER["HTTP_CLIENT_IP"];
}
else
{
$ip = $_SERVER["REMOTE_ADDR"];
}
}
return $ip;
}
//从123查获取ip
function getIpfrom123cha($ip) {
$url = 'http://www.123cha.com/ip/?q='.$ip;
$content = file_get_contents($url);
$preg = '/(?<=本站主数据:<\/li><li style=\"width:450px;\">)(.*)(?=<\/li>)/isU';
preg_match_all($preg, $content, $mb);
$str = strip_tags($mb[0][0]);
//$str = str_replace(' ', '', $str);
$address = $str;
if($address == '') {
$address = '未明';
}
return $address;
}
//从百度获取ip所在地
function getIpfromBaidu($ip) {
$url = 'http://www.baidu.com/s?wd='.$ip;
$content = file_get_contents($url);
$preg = '/(?<=<p class=\"op_ip_detail\">)(.*)(?=<\/p>)/isU';
preg_match_all($preg, $content, $mb);
$str = strip_tags($mb[0][1]);
$str = str_replace(' ', '', $str);
$address = substr($str, 7);
if($address == '') {
$address = '未明';
}
return $address;
}
?>

function addVote()
{
right.innerHTML="<h2>添加投票项</h2>";
right.innerHTML+="<label>投票项标签<label>";
addInput("right","cLabelName","地区名");
right.innerHTML+="<br><label>投票项名称<label>";
addInput("right","cSelectName","学校名");
right.innerHTML+="<br>";
var args = '\'./add.php\',\'cSelectName\',\'cLabelName\'';
var str = '<input type=button value="\u6dfb加" onclick="goToPage('+args+');"/>';
right.innerHTML+=str;
}
//添加文本框
function addInput(parent,id,pla)
{
//创建input
var input = document.createElement("input");
input.type = "text";
input.id = id;
input.placeholder = pla;
document.getElementById(parent).appendChild(input);
}

<?php
require_once '../api/func.php';

if (!isLoginNow())
{
goToPgae("./index.php");
}

$name = $_GET["cSelectName"];
$label = $_GET["cLabelName"];
//echo $name."<br>".$label;
require_once '../api/OperatorVotingDB.php';
$ovdb=new OperatorVotingDB();
$ovdb->addSelectName($name,$label);
require './header.htm';
goToPgae("./admin.php?page=add&auto="."$label"."&id=cLabelName&foc=cSelectName&msg=添加成功");
?>

//js
function goToPage(url,arg1,arg2)
{
var a = document.getElementById(arg1).value;
var b = document.getElementById(arg2).value;
url += '?'+arg1+'='+a;
url += '&'+arg2+'='+b;
window.location.href=url;
}

function goToPage1(url)
{
window.location.href=url;
}