If any step fails, a rollback prevents partial voting.
CREATE DATABASE voting_system; USE voting_system; -- 1. Admin Table CREATE TABLE admin ( id INT AUTO_INCREMENT PRIMARY KEY, username VARCHAR(50) NOT NULL UNIQUE, password VARCHAR(255) NOT NULL ); -- 2. Positions Table CREATE TABLE positions ( id INT AUTO_INCREMENT PRIMARY KEY, description VARCHAR(100) NOT NULL UNIQUE, max_vote INT NOT NULL DEFAULT 1 ); -- 3. Candidates Table CREATE TABLE candidates ( id INT AUTO_INCREMENT PRIMARY KEY, position_id INT NOT NULL, firstname VARCHAR(50) NOT NULL, lastname VARCHAR(50) NOT NULL, photo VARCHAR(150) NOT NULL, bio TEXT, FOREIGN KEY (position_id) REFERENCES positions(id) ON DELETE CASCADE ); -- 4. Voters Table CREATE TABLE voters ( id INT AUTO_INCREMENT PRIMARY KEY, voter_id VARCHAR(30) NOT NULL UNIQUE, password VARCHAR(255) NOT NULL, firstname VARCHAR(50) NOT NULL, lastname VARCHAR(50) NOT NULL, voted_status INT DEFAULT 0 ); -- 5. Votes Table (Stores the tallies) CREATE TABLE votes ( id INT AUTO_INCREMENT PRIMARY KEY, voter_id INT NOT NULL, candidate_id INT NOT NULL, position_id INT NOT NULL, FOREIGN KEY (voter_id) REFERENCES voters(id) ON DELETE CASCADE, FOREIGN KEY (candidate_id) REFERENCES candidates(id) ON DELETE CASCADE, FOREIGN KEY (position_id) REFERENCES positions(id) ON DELETE CASCADE ); Use code with caution. Core PHP Source Code Modules 1. Database Connection ( config/db.php )
Ensure that only authorized users can vote and that each user votes only once. Accuracy: Provide accurate, real-time vote counting.
: Always use prepared statements to protect your database from SQL injection attacks Password Hashing : Use PHP's password_hash() password_verify() rather than storing plain-text passwords. Session Management If any step fails, a rollback prevents partial voting
An automated script that tallies votes instantly once the election window closes, eliminating the human error associated with manual counting. Security and Data Integrity 🛡️
Arjun hesitated. It felt wrong. But he extracted the files. The code was beautiful—clean PDO queries, hashed tokens, an AJAX-powered voter dashboard. He imported the voting_system.sql file into phpMyAdmin, updated the config.php , and ran localhost/vote .
Switch off error output in your production php.ini file ( display_errors = Off ) to prevent internal system path disclosures. Enable log_errors = On instead. Positions Table CREATE TABLE positions ( id INT
Developing a production-ready application requires protection against common web vulnerabilities. Implement the following mechanisms to secure your system: Cross-Site Scripting (XSS) Mitigation
prepare('SELECT voted_status FROM voters WHERE id = ?'); $stmt->execute([$_SESSION['voter']]); $user = $stmt->fetch(); if ($user['voted_status'] == 1) echo "
: Ensure sessions are destroyed upon logout to prevent unauthorized access. or a specific PHP code snippet for the voting logic to get started? Votes Table (Stores the tallies) CREATE TABLE votes
Known for its ease of integration, cost-effectiveness, and wide server support.
An online voting system is a digital platform that allows eligible voters to cast their ballots securely over the internet. Building this project using PHP and MySQL provides a robust, relational database-driven web application ideal for academic submissions, portfolio building, or small-scale organizational elections.