Create, edit, and delete election categories (e.g., President, Vice President).
Interfaces to create election categories (e.g., President, Treasurer) and assign candidates.
| Threat | Protection | |--------|-------------| | SQL Injection | Prepared statements & mysqli_real_escape_string | | XSS Attacks | htmlspecialchars() on output | | Password Theft | bcrypt hashing (password_hash) | | Double Voting | Check votes table before inserting | | Session Hijacking | Regenerate session ID on login | | CSRF | Token-based verification on vote forms |
An efficient voting application requires a secure, modular architecture.The system separates administrative privileges from voter actions.PHP manages server-side logic and session handling.MySQL acts as the relational database for data persistence. Create, edit, and delete election categories (e
: An interface for administrators to manage candidate profiles, including photos and backgrounds.
Apply htmlspecialchars() or sanitization engines to all candidate manifestos and voter inputs before rendering them on administrative pages.
No active candidates registered for this position. : An interface for administrators to manage candidate
: Download the source code from GitHub to your local server directory (e.g., htdocs ).
To ensure a successful election, the system must be divided into distinct modules that separate concerns and protect data integrity.
A robust system requires specific modules to ensure integrity and ease of use: : Download the source code from GitHub to
Implement email verification or admin approval (already included in this system).
| Technology | Purpose | |------------|---------| | PHP (Core) | Backend logic, authentication, voting mechanism | | MySQL | Database storage (users, elections, candidates, votes) | | HTML5/CSS3 | Frontend structure and styling | | Bootstrap 5 | Responsive UI framework | | JavaScript/jQuery | Client-side validations, AJAX for live updates | | Chart.js | Display results in bar/pie charts | | XAMPP/WAMP | Local server environment |
prepare("SELECT voted_status FROM voters WHERE id = ?"); $stmt->execute([$voter_id]); $voter = $stmt->fetch(); if ($voter['voted_status'] == 1) $_SESSION['error'] = 'You have already cast your ballot for this election.'; header('location: home.php'); exit(); if (isset($_POST['vote'])) if (!empty($_POST['position'])) try $pdo->beginTransaction(); // Create a randomized, non-reversible tracking hash to decouple user identity from choices $voter_hash = hash('sha256', $voter_id . 'ElectionSalt2026'); foreach ($_POST['position'] as $position_id => $candidate_id) if (!empty($candidate_id)) $stmt = $pdo->prepare("INSERT INTO votes (voter_id_hash, position_id, candidate_id) VALUES (?, ?, ?)"); $stmt->execute([$voter_hash, $position_id, $candidate_id]); // Mark voter as having voted $update_stmt = $pdo->prepare("UPDATE voters SET voted_status = 1 WHERE id = ?"); $update_stmt->execute([$voter_id]); $pdo->commit(); $_SESSION['success'] = 'Ballot cast successfully! Thank you for voting.'; catch (Exception $e) $pdo->rollBack(); $_SESSION['error'] = 'Transaction failed. Please try again.'; header('location: home.php'); exit(); ?> Use code with caution. 3. Real-Time Results Matrix ( admin/results_data.php )
The foundation of a reliable voting system is its database structure.We need tables for users, candidates, positions, and cast votes.Foreign keys ensure relational integrity across these entities.
Implementing secure session tokens to prevent unauthorized access or "session hijacking."