Source Code Github Exclusive: Onlinevoting System Project In Php And Mysql

The Online Voting System in PHP and MySQL is a complete, secure, and scalable solution for digital voting. Whether you are a student looking for a final-year project, a developer seeking a foundation for e-voting applications, or an organization wanting to modernize elections, this source code provides everything you need.

Download it from GitHub, set it up in minutes, and start exploring or customizing it today.

<?php
session_start();
include 'config/db.php';
if(!isset($_SESSION['user_id'])) 
header("Location: login.php");
exit();

// Check if user has already voted
$checkVote = $conn->prepare("SELECT has_voted FROM users WHERE id = ?");
$checkVote->execute([$_SESSION['user_id']]);
$user = $checkVote->fetch(); The Online Voting System in PHP and MySQL
if($user['has_voted']) 
$_SESSION['error'] = "You have already voted!";
header("Location: dashboard.php");
exit();

// Verify election is active
$election = $conn->query("SELECT election_status FROM election_settings WHERE id = 1");
$status = $election->fetchColumn();
if($status !== 'active') 
$_SESSION['error'] = "Election is not active.";
header("Location: index.php");
exit();
 // Check if user has already voted $checkVote
// Process vote based on POST data
foreach($_POST['candidate'] as $position_id => $candidate_id) 
// Insert vote
$insert = $conn->prepare("INSERT INTO votes (user_id, candidate_id, position_id) VALUES (?, ?, ?)");
$insert->execute([$_SESSION['user_id'], $candidate_id, $position_id]);
// Update candidate's vote count
$updateCandidate = $conn->prepare("UPDATE candidates SET votes = votes + 1 WHERE id = ?");
$updateCandidate->execute([$candidate_id]);


// Mark user as voted
$markVoted = $conn->prepare("UPDATE users SET has_voted = 1 WHERE id = ?");
$markVoted->execute([$_SESSION['user_id']]); and finalizing in one transactional flow.
$_SESSION['success'] = "Thank you! Your vote has been recorded.";
header("Location: results.php");
?>

This snippet demonstrates the atomic nature of the voting process — checking, recording, updating, and finalizing in one transactional flow.

Ready to get your hands dirty? Here is how to get the Online Voting System Source Code up and running on your local machine.