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拿php写一个投票系统出来,比较简单de啦

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在这里插入图片描述

sql:

-- phpMyAdmin SQL Dump-- version 4.5.1-- http://www.phpmyadmin.net---- Host: 127.0.0.1-- Generation Time: 2022-03-28 05:42:05-- 服务器版本: 10.1.13-MariaDB-- PHP Version: 5.6.21SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";SET time_zone = "+00:00";/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;/*!40101 SET NAMES utf8mb4 */;---- Database: `a`---- ------------------------------------------------------------ 表的结构 `voto`--CREATE TABLE `voto` (  `id` int(10) NOT NULL,  `titleid` int(10) DEFAULT NULL,  `item` varchar(50) DEFAULT NULL,  `count` int(10) DEFAULT NULL) ENGINE=InnoDB DEFAULT CHARSET=utf8;---- 转存表中的数据 `voto`--INSERT INTO `voto` (`id`, `titleid`, `item`, `count`) VALUES(24, 1, '张学友', 0),(25, 1, '陈奕迅', 0),(26, 1, '林俊杰', 0),(27, 1, '萧敬腾', 0),(29, 1, '', 0),(30, 1, 'aaa', 0);---- Indexes for dumped tables------ Indexes for table `voto`--ALTER TABLE `voto`  ADD PRIMARY KEY (`id`);---- 在导出的表使用AUTO_INCREMENT------ 使用表AUTO_INCREMENT `voto`--ALTER TABLE `voto`  MODIFY `id` int(10) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=31;/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;

1.php

<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>Document</title></head><body><a href="admin.php">增删改查投票的选项</a><br><a href="index.php">投票给谁呢</a></body></html>

admin.php(增删改查投票的页面)密码:admin

<?phpob_start(); //打开缓冲区 session_start();header("Content-type:text/html;charset=utf-8");$link = mysqli_connect('localhost','root','','a');mysqli_set_charset($link, "utf8");if (!$link) {  die("连接失败:".mysqli_connect_error());}?><!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml"><head>  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />  <title>PHP+mysql开发的简单投票系统</title>  <style type="text/css">    /*全局样式*/    body { font-family: "宋体"; font-size: 12pt; color: #333333; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;background-color: #d4d4d4;}    table { font-family: "宋体"; font-size: 9pt; line-height: 20px; color: #333333}    /*全局样式结束*/  </style>  <script language="javascript">    function selectAll()    {      node=window.document.frm.itm;      for(i=0;i<node.length;i++)      { node[i].checked=true;//全选      }    }    function cancelAll()    {      node=frm.itm;      for(i=0;i<node.length;i++)      { node[i].checked=false;//取消全部      }    }    function del()    {      node=frm.itm;      id="";      for(i=0;i<node.length;i++)      { if(node[i].checked) {   if(id=="")//删除   {     id=node[i].value   }   else   {     id=id+","+node[i].value   } }      }      if(id=="")      { alert("您没有选择删除项");      }      else      { location.href="?type=del&id="+id      }    }  </script></head><body><?phpif(isset($_GET['tj']) == 'out'){  session_destroy();//删除当前用户对应的session文件以及释放session  echo "alert('退出成功!');window.location='index.php'";}?><?phpif(isset($_POST['Submit10'])){  if($_POST['pwd']=='admin'){    $_SESSION['pwd']=2;    echo "alert('登陆成功!');window.location='admin.php'";  }else{    echo "alert('登陆失败,请检查您的密码!');window.location='admin.php'";  }}?><?php if($_SESSION['pwd']<>2){ ?>  <form action="" method="post">    <table width="365" border="0" align="center" cellpadding="5" cellspacing="1" bgcolor="#C2C2C2">      <tr> <td height="30" align="right" bgcolor="#FFFFFF"><label>输入密码:</label></td> <td align="left" bgcolor="#FFFFFF"><input name="pwd" type="text" id="pwd" /></td>      </tr>      <tr> <td height="30" colspan="2" align="center" bgcolor="#FFFFFF"><label>     <input name="Submit10" type="submit" id="Submit10" value="登陆" />   </label>   <label><input type="reset" name="Submit5" value="重置" />   </label></td>      </tr>      <tr> <td height="30" colspan="2" align="center" bgcolor="#FFFFFF">   软件版本:<script type="text/javascript" src="http://www.04ie.com/net/phpvoto1_1.js"></script></td>      </tr>    </table>  </form><?php }else{ ?><?phpif(isset($_POST["Submit"])){$title=$_POST["title"];$sql="update vototitle set vototitle='$title'";mysqli_query($link,$sql);?>  <script language="javascript">    alert("修改成功");  </script><?php}if(isset($_POST["Submit2"])){  $newitem=$_POST["newitem"];  $sql="insert into voto (titleid,item,count) values (1,'$newitem',1)";  mysqli_query($link,$sql);}?>  <form id="frm" name="frm" method="post" action="" style="margin-bottom:3px;">    <table width="365" border="0" align="center" cellpadding="5" cellspacing="1" bgcolor="#C2C2C2">      <tr> <td colspan="4" bgcolor="#FFFFFF"><label>     <?php     $sql="select * from vototitle";     $rs=mysqli_query($link,$sql);     $rows=mysqli_fetch_assoc($rs);     ?>     <input name="title" type="text" id="title" size="35" value="<?php echo $rows["vototitle"]?>" />   </label></td> <td width="68" align="center" bgcolor="#FFFFFF"><label>     <input type="submit" name="Submit" value="修改标题" />   </label></td>      </tr>      <tr> <th width="30" bgcolor="#FFFFFF">编号</th> <th width="45" bgcolor="#FFFFFF">项目</th> <th width="52" bgcolor="#FFFFFF">票数</th> <th width="50" align="center" bgcolor="#FFFFFF">修改</th> <th align="center" bgcolor="#FFFFFF">删除</th>      </tr>      <?php      $sql="select * from voto order by count desc";      $rs=mysqli_query($link,$sql);      while($rows=mysqli_fetch_assoc($rs))      { ?> <tr>   <td align="center" bgcolor="#FFFFFF"><input type="checkbox" name="itm" value="<?php echo $rows["id"]?>" /><?php echo $rows["id"]?></td>   <td align="center" bgcolor="#FFFFFF"><?php echo $rows["item"]?></td>   <td align="center" bgcolor="#FFFFFF"><?php echo $rows["count"]?></td>   <td align="center" bgcolor="#FFFFFF"><input type="button" value="修改" onclick="location.href='?type=modify&id=<?php echo $rows["id"]?>'" /></td>   <td align="center" bgcolor="#FFFFFF"><input type="button" value="删除" onclick="location.href='?type=del&id=<?php echo $rows["id"]?>'"  /></td> </tr> <?php      }      ?>      <tr> <td colspan="5" align="center" bgcolor="#FFFFFF">   <input type="button" value="选择全部" onclick="selectAll()" />   <input type="button" value="取消全部" onclick="cancelAll()" />   <input type="button" value="删除所选" onclick="del()" />   </td>      </tr>      <tr> <td colspan="3" bgcolor="#FFFFFF"><label>     <input name="newitem" type="text" id="newitem" />   </label></td> <td colspan="2" bgcolor="#FFFFFF"><label>     <input type="submit" name="Submit2" value="添加新项" /></label>   <a href="?tj=out">退出管理</a></td>      </tr>    </table>  </form><?php$type = isset($_GET["type"])?$_GET["type"]:"";if($type =="modify"){$id=$_GET["id"];if(isset($_POST["Submit3"])){  $item=$_POST["itm"];  $count=$_POST["count"];  $sql="update voto set item='$item',count=$count where id=$id";  mysqli_query($link,$sql);  echo "alert('修改成功!');window.location='admin.php'";}$sql="select * from voto where id=$id";$rs=mysqli_query($link,$sql);$rows=mysqli_fetch_assoc($rs);?>  <form id="form1" name="form1" method="post" action="" style="margin-top:2px;">    <table width="365" border="0" align="center" cellpadding="5" cellspacing="1" bgcolor="#C2C2C2">      <tr> <th colspan="2" bgcolor="#FFFFFF">修改投票项目</th>      </tr>      <tr> <td align="center" bgcolor="#FFFFFF">名称:</td> <td bgcolor="#FFFFFF"><label>     <input name="itm" type="text" id="itm" value="<?php echo $rows["item"]?>" />   </label></td>      </tr>      <tr> <td align="center" bgcolor="#FFFFFF">票数:</td> <td bgcolor="#FFFFFF"><label>     <input name="count" type="text" id="count" value="<?php echo $rows["count"]?>" />   </label></td>      </tr>      <tr> <td colspan="2" align="center" bgcolor="#FFFFFF"><label>     <input type="submit" name="Submit3" value="修改" />     <input type="reset" name="Submit" value="重置" />   </label></td>      </tr>    </table>  </form>  <?php}  ?>  <?php  $type = isset($_GET["type"])?$_GET["type"]:"";  if($type =="del"){    $id=$_GET["id"];    $sql="delete from voto where id in ($id)";    mysqli_query($link,$sql);    echo "alert('删除成功!');window.location='admin.php'";  }  ?><?php } ?></body></html>

index.php(投票的页面)

<?phpob_start();session_start();header("Content-type:text/html;charset=utf-8");$link = mysqli_connect('localhost','root','','a');mysqli_set_charset($link, "utf8");if (!$link) {  die("连接失败:".mysqli_connect_error());}?><!doctype html><html><head>  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />  <title>投票系统</title>  <script type="text/javascript" src="//cdn.bootcss.com/jquery/1.12.4/jquery.js"></script>  <style type="text/css">    /*全局样式*/    body { font-family: "宋体"; font-size: 12pt; color: #333333; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;background-color: #A6C7E1;}    table { font-family: "宋体"; font-size: 9pt; line-height: 20px; color: #333333}    a:link { font-size: 9pt; color: #333333; text-decoration: none}    a:visited { font-size: 9pt; color: #333333; text-decoration: none}    a:hover { font-size: 9pt; color: #E7005C; text-decoration: underline}    a:active { font-size: 9pt; color: #333333; text-decoration: none}    /*全局样式结束*/  </style>  <script language="javascript">    function check()    {      node=frm.itm;      flag=false;      for(i=0;i<node.length;i++)      { if(node[i].checked) {   flag=true; }      }      if(!flag)      { alert("您没有选择") return false;      }      return true;    }  </script>  <?php  if(isset($_POST["submit"])){    if($_POST){      $id = $_POST["selected_id"];      $sql = "update voto set count = count+1 where id=$id";      mysqli_query($link,$sql);    }    if($_SESSION["voto"]==session_id())    {      ?>      <script language="javascript"> alert("您已经投票了"); location.href="index.php";      </script>    <?php    exit();    }    $id=$_POST["itm"];    $sql="update voto set count=count+1 where id=$id";    if(mysqli_query($link,$sql))    {    $_SESSION["voto"]=session_id();    ?>      <script language="javascript">alert("投票成功,点确定查看结果");location.href="index.php?id=ck";</script>    <?php    }    else    {    ?>      <script language="javascript">alert("投票失败");location.href="index.php";</script>      <?php    }  }  ?></head><body><form name="frm" action="" method="post" onsubmit=return(check()) style="margin-bottom:5px;">  <table width="365" border="0" align="center" cellpadding="5" cellspacing="1" bgcolor="#C2C2C2">    <tr>      <th bgcolor="#FFFFCC"> <?php $sql="select * from vototitle"; $rs=mysqli_query($link,$sql); $row=mysqli_fetch_assoc($rs); echo $row["vototitle"]; ?> </th>    </tr>    <?php    $sql="select * from voto";    $rs=mysqli_query($link,$sql);    while($rows=mysqli_fetch_assoc($rs))    {      ?>      <tr> <td bgcolor="#FFFFFF"><input type="radio" name="itm" value="<?php echo $rows["id"]?>" />     <?php echo $rows["item"]?></td>      </tr>      <?php    }    ?>    <tr>      <td align="center" bgcolor="#FFFFFF"> <input type="submit" name="submit" value="投票"/> <input type="hidden" id="selected_id" name="selected_id" value=""> <input type="button" value="查看结果" onClick="location.href='index.php?id=ck'"/>   <script type="text/javascript">     $("[type='radio']").click(function(){ $("#selected_id").val($(this).val());     }); </script></td>    </tr>  </table></form><?phpif(isset($_GET["id"])=="ck"){?>  <?php  $sql="select sum(count) as 'total' from voto";  $rs=mysqli_query($link,$sql);  $rows=mysqli_fetch_assoc($rs);  $sum=$rows["total"];  //得出总票数  $sql="select * from voto";  $rs=mysqli_query($link,$sql);  ?>  <table id="click" width="365" border="0" align="center" cellpadding="5" cellspacing="1" bgcolor="#C2C2C2" >    <tr>      <th bgcolor="#FFFFFF">项目</th>      <th bgcolor="#FFFFFF">票数</th>      <th bgcolor="#FFFFFF">百分比</th>    </tr>    <?php    while($rows=mysqli_fetch_assoc($rs))    {      ?>      <tr> <td bgcolor="#FFFFFF"><?php echo $rows["item"]?></td> <td bgcolor="#FFFFFF"><?php echo $rows["count"]?></td> <td bgcolor="#FFFFFF">   <?php   $per=$rows["count"]/$sum;   $per=number_format($per,4);   ?>   <img src="" height="4" width="<?php echo $per*100?>" />   <?php echo $per*100?>%      </td>      </tr>      <?php    }    ?>  </table>  <div align="center">    <a href="index.php">隐藏结果</a>  </div><?php } ?></body></html>