What are some recommended PHP frameworks and CSS frameworks for developing a web application with user authentication features?

When developing a web application with user authentication features, it is recommended to use PHP frameworks like Laravel, Symfony, or CodeIgniter. These frameworks provide built-in authentication functionalities, making it easier to implement secure user authentication in your web application. Additionally, using CSS frameworks like Bootstrap or Foundation can help in designing a visually appealing and responsive user interface for your authentication features.

// Example PHP code using Laravel framework for user authentication

// Create a new Laravel project
composer create-project --prefer-dist laravel/laravel myapp

// Generate authentication scaffolding
php artisan make:auth

// Migrate the authentication database tables
php artisan migrate