What's new in PHP 8.1

Some examples of what's new in PHP 8.1

• Array unpacking
• First class callables
• Never type
• Pure intersection types
• Readonly properties
• Use 'new' in constructors

Running examples

1. Run the container:

   $ docker-compose up -d
   

2. Run the script (inside the src directory):

   $ docker exec -it php81 php <script-name>.php