If you are looking at using Laravel / Composer anyways, you should consider Craft CMS.

They have just added a basic GraphQL implementation with more to come.

Hey 👋 Emil Moe, an implementation in PHP would be really great. Unfortunately, I'm not an expert in PHP, but I was under the impression that there will be a GraphQL client library in the PHP ecosystem. If that's not the case then it seems like an interesting project 😋 to me. In the meantime, we can make raw HTTP requests to the API to do our thing. Here is an example snippet which does that (pardon me! It's in JS)

fetch('api.hashnode.com', {
    method: 'POST',
    headers: { 'Content-Type': 'application/json', 'Authorization': "<your token here>"},
    body: JSON.stringify({
        query: 'query { storiesFeed(type: GLOBAL){ title } }'
    }),
})
    .then(res => res.json())
    .then(res => console.log(JSON.stringify(res)))

As a client I would go for github.com/softonic/graphql-client something like this. you could create an object / array based system but creating a nested graph i a pain in the ass and just writing it declarative makes a lot of sense to me.