Hello world

Clean and simple single-file example of main GraphQL concepts originally proposed and implemented by Leo Cavalcante

Run locally

php -S localhost:8080 ./graphql.php

Try query

curl http://localhost:8080 -d '{"query": "query { echo(message: \"Hello World\") }" }'

Try mutation

curl http://localhost:8080 -d '{"query": "mutation { sum(x: 2, y: 2) }" }'