Community Learn Tools Library Leisure
search
English
Home > Backend Development > PHP Tutorial > PHP query operation to implement voting function, PHP query voting function_PHP tutorial

PHP query operation to implement voting function, PHP query voting function_PHP tutorial

WBOY
Release： 2016-07-12 08:52:33
Original
829 people have browsed it

php query operation to implement voting function, php query voting function

The example in this article shares the code of php query operation to implement voting function for your reference, the specific content is as follows

Title:

Summary of problem-solving methods:

Method 1:
1. Main voting page: 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>投票</title>
<style>
#list
{
  width:400px;
  height:300px;}
#jieguo
{
  width:400px;
  height:300px;}
.x
{
   
  float:left;}
 
</style>
</head>
 
<body>
 
<form action="TouChuLi.php" method="post">
<&#63;php
include ("DBDA.class.php");
$db=new DBDA();
//从调研题目表中找出题目代号和名称
$sql="select * from diaoyantimu limit 0,1";
$arr=$db->query($sql);
$tmmc=$arr[0][1];
$tmdh=$arr[0][0];
echo "<div><h2>{$tmmc}:</h2></div>";
//从调研选项表中输出选项内容：
$sqlxx="select * from diaoyanxuanxiang where timudaihao='{$tmdh}'";
$arrxx=$db->query($sqlxx);
echo "<div id='list'>";
foreach ($arrxx as $v)
{
  echo "<div><input type='checkbox' value='{$v[0]}' name='xx[]'>{$v[1]}</div><br />";
}
 
&#63;>
<input type="submit" value="提交">
<input type="button" value="查看结果" id="check" onclick="Showjieguo()">
</form>
</div>
 
<div id="jieguo" style="display:none">
<&#63;php
//计算总人数：
$sqlzs="select sum(numbers) from diaoyanxuanxiang where timudaihao='{$tmdh}'";
$zrs=$db->query($sqlzs);
 
foreach ($arrxx as $v)
{
   
  $name=$v[1];
  $number=$v[2];
  if($zrs[0][0]==0)
   {
     $bfb = 0;
   }
   else
   {
     $bfb = ($number/$zrs[0][0])*100;
   }
  $bfb=round($bfb,2);
  echo "<div>
    <span class='x'>{$name} </span>
    <div class='x' style='width:200px; height:10px; background-color:#808080'>
    <div style='width:{$bfb}%; height:10px; background-color:#FF8040'> </div>
    </div>
    <span class='x'>{$number} </span>
    <span class='x'>{$bfb}% </span>
    </div>
    <br />
    "; 
}
&#63;>
<input type="button" value="返回" id="fanhui" onclick="Showfanhui()">
</div>
<script>
function Showjieguo()
{
  document.getElementById("list").style.display="none";
  document.getElementById("jieguo").style.display="block";
  }
function Showfanhui()
{
  document.getElementById("list").style.display="block";
  document.getElementById("jieguo").style.display="none";
  }
</script>
 
</body>
</html>
Copy after login

2. Process the voting page: 

<&#63;php
$arr=$_POST["xx"];
include ("../DBDA.class.php");
$db=new DBDA();
 
 
foreach($arr as $v)
{
  $sql = "update diaoyanxuanxiang set numbers = numbers+1 where ids = '{$v}'";
  $db->Query($sql,1);//1代表$sql的类型
}
header ("location:TouPiao.php");
&#63;>
Copy after login
Copy after login

3. Create a class for accessing the database and encapsulate it for reference: 

<&#63;php
//执行一个sql语句，返回相应的结果
class DBDA
{
  public $host="localhost";//数据库服务器地址
  public $uid="root";//数据库用户名
  public $password="";//数据库密码
  //执行SQL语句的方法
  //参数里面：$sql代表要执行的sql语句；$type是sql语句的类型，0代表查询，1代表其他(增删改)；$db代表要操作的数据库
  function Query($sql,$type=0,$db="mydb")
  {
    //造连接对象
    $dbconnect=new MySQLi($this->host,$this->uid,$this->password,$db);
    //判断连接是否出错
    !mysqli_connect_error() or die("连接失败！");
    //执行sql语句
    $result=$dbconnect->query($sql);
    //判断SQL语句类型
    if($type==0)
    {
       //如果是查询语句返回结果集的二维数组
      return $result->fetch_all();
      }
    else
    {
      //如果是其他语句，返回true或false
      return $result;
      }   
    }
     
  }
Copy after login

Method 2:

1. Main voting page: 

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>投票</title>
<style>
.x
{
   
  float:left;}
 
</style>
</head>
 
<body>
 
<form action="TouChuLi.php" method="post">
<&#63;php
include ("../DBDA.class.php");
$db=new DBDA();
//从调研题目表中找出题目代号和名称
$sql="select * from diaoyantimu limit 0,1";
$arr=$db->query($sql);
$tmmc=$arr[0][1];
$tmdh=$arr[0][0];
echo "<div><h2>{$tmmc}:</h2></div>";
//从调研选项表中输出选项内容：
$sqlxx="select * from diaoyanxuanxiang where timudaihao='{$tmdh}'";
$arrxx=$db->query($sqlxx);
echo "<div id='list'>";
foreach ($arrxx as $v)
{
  echo "<div><input type='checkbox' value='{$v[0]}' name='xx[]'>{$v[1]}</div><br />";
}
 
&#63;>
<input type="submit" value="提交">
<a href="ChaKan.php"><input type="button" value="查看结果" id="check" ></a>
</form>
</body>
</html>
Copy after login

2. Process voting page: 

<&#63;php
$arr=$_POST["xx"];
include ("../DBDA.class.php");
$db=new DBDA();
 
 
foreach($arr as $v)
{
  $sql = "update diaoyanxuanxiang set numbers = numbers+1 where ids = '{$v}'";
  $db->Query($sql,1);//1代表$sql的类型
}
header ("location:TouPiao.php");
&#63;>
Copy after login
Copy after login

3. View the voting results page: 

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>查看结果</title>
<style>
.x
{
  float:left;}
</style>
</head>
<body>
 
<&#63;php
include ("../DBDA.class.php");
$db=new DBDA();
//从调研题目表中找出题目代号和名称
$sql="select * from diaoyantimu limit 0,1";
$arr=$db->query($sql);
$tmmc=$arr[0][1];
echo "<div><h2>{$tmmc}:</h2></div>";
//从调研选项表中输出选项内容：
$sqlxx="select * from diaoyanxuanxiang where timudaihao='{$arr[0][0]}'";
$arrxx=$db->query($sqlxx);
 
//计算总人数：
$sqlzs="select sum(numbers) from diaoyanxuanxiang where timudaihao='{$arr[0][0]}'";
$zrs=$db->query($sqlzs);
 
foreach ($arrxx as $v)
{
   $name=$v[1];//调研项目名称
   $number=$v[2];//选择该项的人数
   //判断总人数是否为0
   if($zrs[0][0]==0)
   {
     $bfb = 0;
   }
   else
   {
     $bfb = ($number/$zrs[0][0])*100;//求百分比
   }
   
  $bfb=round($bfb,2); //取小数点后两位
  echo "<div>
  <span class='x'>{$name} </span>
  <div class='x' style='width:200px; height:10px; background-color:#808080'>
  <div style='width:{$bfb}%; height:10px; background-color:#FF8040'> </div>
  </div>
  <span class='x'>{$number} </span>
  <span class='x'>{$bfb}%</span><br />
  </div><br />"; 
}
&#63;>
<br />
<a href="TouPiao.php"><input type="button" value="返回"></a>
</body>
</html>
Copy after login

Display results:

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

www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1126074.htmlTechArticlePHP query operation to implement voting function, php query voting function This article shares an example of php query operation to implement voting function. The code is for your reference. The specific content is as follows: Solution...
Related labels：
php vote Inquire
source：php.cn
Previous article：php pdo oracle Chinese garbled characters, _PHP tutorial Next article：PHP development of WeChat public account (basics) - play with it, php basics_PHP tutorial
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Latest Issues
PHP arrays obtained from URL parameters do not behave as expected I have a URL parameter that contains the category ID and I want to treat it as an array li...
From 2024-04-06 22:09:02
0
1
1428
Where should I place CustomLog directive in apache I'm using php:7.2-apachedocker. I need to disable health check url login access log. Based...
From 2024-04-06 22:03:59
0
1
990
What is the format of the variables in the return value? I am a new learner of php. I found a piece of code: if($x<time()){return[false,'error']...
From 2024-04-06 21:55:20
0
1
778
Problems encountered when using opentbs to generate odt files: values ​​of the same key are displayed in the same row instead of separate columns. I'm using a library called OpenTbs to create odt using PHP, I'm using it because columns a...
From 2024-04-06 20:18:18
0
1
483
Group MySQL results by ID for looping over I have a table with flight data in mysql. I'm writing a php code that will group and displ...
From 2024-04-06 17:27:56
0
1
406
Related Topics
More>
Popular Recommendations
Popular Tutorials
More>
Related Tutorials
Popular Recommendations
Latest courses
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template