PHP MySql jQuery implements the "like" and "dislike" voting functions, mysqljquery

The example in this article shares with you the red and blue (upvote) voting code based on PHP jQuery MySql , for your reference, the specific content is as follows

Database operations:

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:

<div class="digg"> 
 <div id="dig_up" class="digup"> 
 <span id="num_up"></span> 
 <p>很好，很強(qiáng)大！</p> 
 <div id="bar_up" class="bar"><span></span><i></i></div> 
 </div> 
 <div id="dig_down" class="digdown"> 
 <span id="num_down"></span> 
 <p>太差勁了！</p> 
 <div id="bar_down" class="bar"><span></span><i></i></div> 
 </div> 
 <div id="msg"></div> 
</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(){ 
 //鼠標(biāo)滑向和離開投票按鈕時(shí)，變換背景樣式 
 $("#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"); 
 }); 
 
 //初始化數(shù)據(jù) 
 getdata("do.php",1); 
 
 //單擊“頂”時(shí) 
 $("#dig_up").click(function(){ 
 getdata("do.php?action=like",1); 
 }); 
 //單擊“踩”時(shí) 
 $("#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); 
  //通過控制寬度來顯示百分比進(jìn)度條效果 
  $("#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{//投票失敗 
  $("#msg").html(data.msg).show().css({'opacity':1,'top':'40px'}) 
  .animate({top:'-50px',opacity:0}, "slow"); 
 } 
 }); 
} 

php:

include_once("connect.php");//連接數(shù)據(jù)庫 
 
$action = $_GET['action']; 
$id = 1; 
$ip = get_client_ip();//獲取ip 
 
if($action=='like'){//頂 
 likes(1,$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($count==0){//還沒有頂過 
 if($type==1){//頂 
  $sql = "update votes set likes=likes+1 where id=".$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; 
  $arr['msg'] = '操作失敗，請(qǐng)重試'; 
  echo json_encode($arr); 
 } 
 }else{ 
 $msg = $type==1?'您已經(jīng)頂過了':'您已經(jīng)踩過了'; 
 $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); 
} 

The above is the entire content of this article. I hope it will be helpful to everyone in learning PHP programming.