本文实例为大家分享了基于PHP+jQuery+MySql实现红蓝(顶踩)投票代码，供大家参考，具体内容如下

数据库操作：

CREATE TABLE IF NOT EXISTS `votes` (

`id` int(10) NOT NULL AUTO_INCREMENT,

`likes` int(10) NOT NULL DEFAULT '0',

`unlikes` int(10) NOT NULL DEFAULT '0',

PRIMARY KEY (`id`)

) ENGINE=MyISAM DEFAULT CHARSET=utf8;

INSERT INTO `votes` (`id`, `likes`, `unlikes`) VALUES

(1, 30, 10);

CREATE TABLE IF NOT EXISTS `votes_ip` (

`id` int(10) NOT NULL,

`vid` int(10) NOT NULL,

`ip` varchar(40) NOT NULL

) ENGINE=MyISAM DEFAULT CHARSET=utf8;

div：

css：

.digg{width:420px; height:120px; margin:80px auto 20px auto; position:relative}

#dig_up,#dig_down{width:200px; height:48px; margin:10px; position:relative;

border:1px solid #d3d3d3; padding-left:42px; cursor:pointer}

.digup{background:url(diggs.png) no-repeat 4px 2px;}

.digup_on{background:url(diggs.png) no-repeat 4px -49px;}

.digdown{background:url(diggs.png) no-repeat 4px -102px;}

.digdown_on{background:url(diggs.png) no-repeat 4px -154px;}

#num_up,#num_down{position:absolute; right:6px; top:18px; font-size:20px;}

#dig_up p{height:24px; line-height:24px; color:#360}

#dig_down p{height:24px; line-height:24px; color:#f30}

.bar{width:100px; height:12px; line-height:12px; border:1px solid #f0f0f0;

position:relative; text-align:center}

.bar span{display:block; height:12px; }

.bar i{position:absolute; top:0; left:104px;}

#bar_up span{background:#360}

#bar_down span{background:#f60}

#msg{position:absolute; right:20px; top:40px; font-size:18px; color:#f00}

jquery：

$(function(){

//鼠标滑向和离开投票按钮时，变换背景样式

$("#dig_up").hover(function(){

$(this).addClass("digup_on");

},function(){

$(this).removeClass("digup_on");

});

$("#dig_down").hover(function(){

$(this).addClass("digdown_on");

},function(){

$(this).removeClass("digdown_on");

});

//初始化数据

getdata("do.php",1);

//单击“顶”时

$("#dig_up").click(function(){

getdata("do.php?action=like",1);

});

//单击“踩”时

$("#dig_down").click(function(){

getdata("do.php?action=unlike",1);

});

});

---------------------------------------

function getdata(url,sid){

$.getJSON(url,{id:sid},function(data){

if(data.success==1){//投票成功

$("#num_up").html(data.like);

//通过控制宽度来显示百分比进度条效果

$("#bar_up span").css("width",data.like_percent);

$("#bar_up i").html(data.like_percent);

$("#num_down").html(data.unlike);

$("#bar_down span").css("width",data.unlike_percent);

$("#bar_down i").html(data.unlike_percent);

}else{//投票失败

$("#msg").html(data.msg).show().css({'opacity':1,'top':'40px'})

.animate({top:'-50px',opacity:0}, "slow");

}

});

}

php：

include_once("connect.php");//连接数据库

$action = $_GET['action'];

$id = 1;

$ip = get_client_ip();//获取ip

if($action=='like'){//顶

likes(1,$id,$ip);

}elseif($action=='unlike'){//踩

likes(0,$id,$ip);

}else{

echo jsons($id);

}

------------------------------------

function likes($type,$id,$ip){

$ip_sql=mysql_query("select ip from votes_ip where vid='$id' and ip='$ip'");

$count=mysql_num_rows($ip_sql);

if($count==0){//还没有顶过

if($type==1){//顶

$sql = "update votes set likes=likes+1 where id=".$id;

}else{//踩

$sql = "update votes set unlikes=unlikes+1 where id=".$id;

}

mysql_query($sql);

$sql_in = "insert into votes_ip (vid,ip) values ('$id','$ip')";

mysql_query($sql_in);

if(mysql_insert_id()>0){

echo jsons($id);

}else{

$arr['success'] = 0;

$arr['msg'] = '操作失败，请重试';

echo json_encode($arr);

}

}else{

$msg = $type==1?'您已经顶过了':'您已经踩过了';

$arr['success'] = 0;

$arr['msg'] = $msg;

echo json_encode($arr);

}

}

-----------php-------------------------

function jsons($id){

$query = mysql_query("select * from votes where id=".$id);

$row = mysql_fetch_array($query);

$like = $row['likes'];

$unlike = $row['unlikes'];

$arr['success']=1;

$arr['like'] = $like;

$arr['unlike'] = $unlike;

$like_percent = round($like/($like+$unlike),3)*100;

$arr['like_percent'] = $like_percent.'%';

$arr['unlike_percent'] = (100-$like_percent).'%';

return json_encode($arr);

}

以上就是本文的全部内容，希望对大家学习php程序设计有所帮助。