PHO Login & Registration System is a PHP-based authentication module designed to provide a secure and modern login and registration experience.

The system includes user registration, email-based account verification, login with email and password, password recovery, and a protected user dashboard. It can be integrated into an existing PHP application or used as a standalone authentication module.

Built with PHP, MySQL, PHPMailer, and Bootstrap 5, the system also includes session-based authentication, CSRF token protection, prepared statements for database queries, and output handling with htmlspecialchars().

The responsive Bootstrap 5 interface is designed to work across desktop, tablet, and mobile devices, while the structured and commented code makes the system easier to integrate and extend.

• User registration with validation

• Login using email and password

• Secure password hashing with password_hash() and password_verify()

• Email verification with activation links

• Forgot-password functionality

• Password reset through email links

• Session-based authentication

• Protected user pages

• Logout functionality

• CSRF token protection for important forms

• SQL injection protection using prepared statements

• XSS protection using htmlspecialchars()

• MySQLi or PDO database support

• PHPMailer SMTP email support

• Bootstrap 5 interface

• Responsive design for desktop, tablet, and mobile

• Clean and commented code structure

• PHP 7.4+ / PHP 8.x

• MySQL or MariaDB

• PHPMailer via Composer

• HTML5

• CSS3

• Bootstrap 5

• JavaScript for basic validation

• Web server such as Apache or Nginx

• XAMPP, WAMP, Laragon, or cPanel hosting can be used

• PHP extensions: mysqli, mbstring, json, and openssl

• SMTP configuration for email verification and password-reset emails