I want to install guzzle https://github.com/guzzle/guzzle
I read the reference, but I'm confused this section :
From that tutorial, asking for require composer autoloader. So seems needed to add require 'vendor/autoload.php';
Where I add the script?
I using laravel 5.6
You don't have to do anything if you are going to install guzzle in Laravel. The example above is for core php actually. Laravel will automatically do it for you.
Just run
composer require guzzlehttp/guzzle
in your terminal. (of course in the directory where your laravel project actually is.)And add
use GuzzleHttp\Client;
at the top of the file you will be calling guzzle from.