PHP Assignment

Please build REST API for the Tic-Tac-Toe game https://en.wikipedia.org/wiki/Tic-tac-toe. We provide you with Yaml file as example of basic REST API setup

The REST API should be implemented using PHP, no data storage is required. Try to keep slim and omit heavy framework usage. Any required libraries and components are allowed.

Game flow

The client (player) starts a game, makes a request to server to initiate a TicTakToe board. ( Client (player) will always use cross )
The backend responds with the location URL of the started game.
Client gets the board state from the URL.
Client makes a move; move is sent back to the server.
Backend validates the move, makes it's own move and updates the game state. The updated game state is returned in the response.
And so on. The game is over once the computer or the player gets 3 noughts or crosses, horizontally, vertically or diagonally or there are no moves to be made.

docker-compose up -d --build
docker-compose exec php composer install

The backed server will be ready on http://localhost.