首先是实现的原理
从上一个css实现星级评分I 、II，可是看出，只要能识别onclick和将数据记录至数据库中存储，然后从数据库中调用出数据进行计算就
可以得到当前的评分均值——当前的分值。
1.下面是建立数据库的sql
| 以下是引用片段： CREATE TABLE ratings( id INT NOT NULL AUTO_INCREMENT PRIMARY KEY, total_votes INT NOT NULL, total_value INT NOT NULL, which_id INT NOT NULL, which_table VARCHAR(255), used_ips LONGTEXT NULL ); |
| 以下是引用片段： require("connectDB.php"); require("closeDB.php"); require("tableName.php"); require("openDB.php"); ?> |
3.显示投票程序和更新投票数据程序
| 以下是引用片段： $rating_posted=$_GET['vote'];//pased variable by the the stars value $id=$_GET['id']; $query=mysql_query("SELECT total_votes, total_value, used_ips FROM $tableName WHERE id='".$id."' ")or die(" Error: ".mysql_error()); $numbers=mysql_fetch_assoc($query); $checkIP=unserialize($numbers['used_ips']); $count=$numbers['total_votes'];//how many votes total $current_rating=$numbers['total_value'];//total number of rating added together and stored $sum=$rating_posted+$current_rating;// add together the current vote value and the total vote value $tense=($count==1) ? "vote" : "votes";//plural form votes/vote $voted=@mysql_fetch_assoc(@mysql_query("SELECT title FROM $tableName WHERE used_ips LIKE '%".$_SERVER['REMOTE_ADDR']."%' AND id='$id' ")); //Pattern match ip:suggested by Bramus! http://www.bram.us/ - this variable searches through the previous ip address that have voted and returns true or false if($voted){ echo "";//show the current value of the vote with the current numbers }else{ if(isset($_GET['vote'])){ if($sum==0){ $added=0;//checking to see if the first vote has been tallied }else{ $added=$count+1;//increment the current number of votes } if(is_array($checkIP)){ array_push($checkIP,$_SERVER['REMOTE_ADDR']);//if it is an array i.e. already has entries the push in another value }else{ $checkIP=array($_SERVER['REMOTE_ADDR']);//for the first entry } $insert=serialize($checkIP); mysql_query("UPDATE $tableName SET total_votes='".$added."', total_value='".$sum."', used_ips='".$insert."' WHERE id='".$_GET['id']."'"); 0
最新评论共有 0 位网友发表了评论
查看所有评论
发表评论
热点关注
相关文章
|
TOP
