完整的ajax请求投票点赞功能的实现【数据库表一（票数）表二（ip限制重复投票）】

前端php页面

<?php     
          if(isset($_GET['id'])){
                $id=$_GET['id'];
          }
           include('data/conn.php');
           $sqls="select count from activity where id=$id";
           $results=mysqli_query($link,$sqls);
           $row=mysqli_fetch_assoc($results);
           $ip=  $_SERVER['REMOTE_ADDR'];              
 ?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
     <link rel="stylesheet" href="css/saveclick.css" type="text/css" />
     <script type="text/javascript" src="js/jquery.js"></script>
    <title>分享收集花瓣</title>
</head>
<body>
           <div class="content">
                         <div class="word-2"></div>
                      <div class="ticket"></div>
                      <div class="count" id="count"><?php echo $row['count'] ?></div>
                      <div class="font">花瓣数量</div>
                      <div style="float: right;" onclick="collect();"> 
                        <div class="huaban"></div>
                        <div class="font ft-1" >送TA花瓣</div>
                      </div>
                      <div class="st" style="display:none;"><?php echo $id ?></div>
                      <div class="ip" style="display:none;"><?php echo $ip;?></div>
                     
                     
           </div>
</body>
<script type="text/javascript">
        function collect(){
                  var id=$('.st').text();
                  var count=$("#count").text();
                  var ip=$('.ip').text();                    
              $.post('data/data-count.php',{"id":id,"ip":ip},function(data){
                  if(count>=10){
                         alert("攒花成功了，赶紧截图帮TA发到天甲网络微信公众号领奖去吧！");
                        window.location.href="ticket1.php";
                 }else{
                         if(data['msg']==2){
                        alert("你已经送过TA花瓣了,分享到朋友圈让其他小伙伴一起为TA送花！");
                     }else if(data['msg']==0){
                        alert('送TA花瓣失败了，请重新送花！');
                     }else{
                        alert("送花成功,赶紧分享到朋友圈喊其他小伙伴一起为TA送花吧！");
                        $("#count").html(parseInt(count)+1);
                     }
                }
   
                    },'JSON');   

           }
</script>
</html>

数据库连接mysqli

<?php 
     $link=mysqli_connect('localhost','root','','38activity');     
     mysqli_query($link,"SET NAMES 'utf8'");
 ?>

后台处理数据页面实现计数更新以及ip防止重复记录

<?php          
          include('conn.php');
          $id=$_POST['id'];
          $ip=$_POST['ip'];
          $ip_sql=mysqli_query($link,"select ip from ip where aid=$id and ip='$ip' ");
          $count=mysqli_num_rows($ip_sql);
          if($count==0){   //没有投票
             $sql="update  activity  set count=count+1  where id=$id" ; 
             mysqli_query($link,$sql); 
             $sql_in = "insert into  ip(ip,aid) values ('$ip','$id')";
             mysqli_query($link,$sql_in);
             if(mysqli_insert_id($link)>0){
                    $arr['msg'] = 1;
                     $arr['success'] = '投票成功,谢谢您的参与';
                     echo json_encode($arr);
             }else{
               $arr['msg'] = 0;
               $arr['success'] = '操作失败，请重试';
               echo json_encode($arr);
             }
          }else{
               $arr['msg'] = 2;
               $arr['success'] = '您已经投票过了';
               echo json_encode($arr);
          }

数据库表

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原文地址：https://www.cnblogs.com/kangshuai/p/5234217.html