PHP+MySql+jQuery实现的"顶"和"踩"投票功能

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：

rush:sql;"> 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 <a href="https://www.jb51.cc/tag/Vote/" target="_blank" class="keywords">Vote</a>s (id,likes,unlikes) VALUES
(1,30,10);

CREATE TABLE IF NOT EXISTS <a href="https://www.jb51.cc/tag/Vote/" target="_blank" class="keywords">Vote</a>s_ip (
id int(10) NOT NULL,vid int(10) NOT NULL,ip varchar(40) NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8;

div：

rush:xhtml;">

很好，很强大！

太差劲了！

css：

rush: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：

rush:js;"> $(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：

$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,$ip);
}else{
echo jsons($id);
}

---

function likes($type,$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。