The "Symfony Demo Application" is a reference application created to show how to develop applications following the Symfony Best Practices.

• PHP 7.2.9 or higher;
• PDO-SQLite PHP extension enabled;
• and the usual Symfony application requirements.

Download Symfony to install the symfony binary on your computer and run this command:

$ symfony new --demo my_project

Alternatively, you can use Composer:

$ composer create-project symfony/symfony-demo my_project

There's no need to configure anything to run the application. If you have installed Symfony binary, run this command:

$ cd my_project/
$ symfony serve

Then access the application in your browser at the given URL (https://localhost:8000 by default).

If you don't have the Symfony binary installed, run php -S localhost:8000 -t public/ to use the built-in PHP web server or configure a web server like Nginx or Apache to run the application.

Execute this command to run tests:

$ cd my_project/
$ ./bin/phpunit