We can now encode our JWT. The Firebase JWT library makes this really simple:

$jwt = JWT::encode($payload, $key, 'HS256');

I'll also show you how you can create a 256 bit secret key using SSL, like so:

openssl rand -base64 32 (This will work on Mac and Linux out of the box...not tried it on Windows yet...sorry, someone let me know if it works!)

Branch: https://github.com/GaryClarke/pest-tdd/tree/81-firebase-jwt