1. Download the files.

If you're using Composer, you can run the following command:

composer require mikecao/flight

OR you can download them directly and extract them to your web directory.

2. Configure your webserver.

For Apache, edit your .htaccess file with the following:

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php [QSA,L]

For Nginx, add the following to your server declaration:

server {
    location / {
        try_files $uri $uri/ /index.php;

3. Create your index.php file.

First include the framework.

require 'flight/Flight.php';

If you're using Composer, run the autoloader instead.

require 'vendor/autoload.php';

Then define a route and assign a function to handle the request.

Flight::route('/', function(){
    echo 'hello world!';

Finally, start the framework.