Multifunctional online voting system implemented in PHP

Multifunctional online voting system implemented in PHP

Introduction:
With the popularity and development of the Internet, online voting has become more and more popular in various organizations and activities increasingly common. In order to conduct online voting conveniently and efficiently, this article will introduce a multi-functional online voting system developed based on PHP. This system allows users to easily create and manage polls, and supports a variety of poll types and features.

Technology and environment used by the system:

• Server side: PHP, MySQL, Apache
• Client side: HTML, CSS, JavaScript

System function design:

1. User registration and login function:
   After registering an account and logging in to the system, users can create their own votes, participate in other people's votes, and view voting results .
2. Poll creation function:
   Users can create multiple polls, and can customize the title, options and other related settings of the poll. The following is a sample code for creating a poll:

<?php
 session_start();
 // 校验用户登录状态
 if(!isset($_SESSION['user_id'])){
     header("Location: login.php");
     exit();
 }

 // 处理投票的提交
 if(isset($_POST['submit'])){
     $title = $_POST['title'];
     $options = $_POST['options'];
     
     // 对提交的数据进行校验和处理
     
     // 记录投票到数据库
 }

?>

<form method="post" action="create_vote.php">
 <label for="title">投票标题</label>
 <input type="text" id="title" name="title" required>
 
 <label for="options">选项</label>
 <textarea id="options" name="options" required></textarea>
 
 <button type="submit" name="submit">创建投票</button>
</form>

3. Poll participation function:
   Users can view and participate in polls created by other users. The following is a sample code for participating in voting:

<?php
 session_start();
 // 校验用户登录状态
 if(!isset($_SESSION['user_id'])){
     header("Location: login.php");
     exit();
 }

 // 处理投票选项的提交
 if(isset($_POST['vote'])){
     $option_id = $_POST['option'];
     
     // 对提交的数据进行校验和处理
     
     // 记录投票结果到数据库
 }

?>

<form method="post" action="vote.php">
 <h3 id="投票标题">投票标题</h3>
 
 <input type="radio" name="option" value="1" required>选项1<br>
 <input type="radio" name="option" value="2" required>选项2<br>
 
 <button type="submit" name="vote">投票</button>
</form>

4. Voting results viewing function:
   Users can view the real-time results of voting, and the results are displayed in the form of charts. The following is a sample code showing the voting results:

<?php
 session_start();
 // 校验用户登录状态
 if(!isset($_SESSION['user_id'])){
     header("Location: login.php");
     exit();
 }

 // 获取投票结果数据，并进行处理
 
?>

<h3 id="投票标题">投票标题</h3>
 
<p>选项1: <?php echo $count_option1; ?></p>
<p>选项2: <?php echo $count_option2; ?></p>

<!-- 使用图表展示投票结果 -->

Summary:
This article introduces a multi-functional online voting system developed based on PHP. Through this system, users can easily create, manage and participate in voting, and can view voting results in real time. In addition, this article also provides some sample code for readers to better understand and practice. You can carry out further functional expansion and optimization according to your own needs. I hope this voting system can help organizations and activities that need online voting capabilities.

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