PHP VK Login with Guzzle

I decided to learn PHP without using frameworks. This is my second project. Here I use Composer for the first time to use the dependency puzzle. With it you can make JSON requests against API servers. Here in this project I made an OAuth2 authentication in Vkontakte. This is a Russian social network.

The .env file must be edited for the app to work, more information can be found here: https://vk.com/dev/auth_sites

APP_ID=
REDIRECT=
SECRET_KEY=
SCOPES=offline

Composer download

https://getcomposer.org/download/

Installation

$ composer install

Sequence diagram

The sequence diagram shows the OAuth2 authentication process at VK

Login

This is the login page that leads to the app login of our VK site when you click on the button

VK Access Page

This is the OAuth2 page of VK where permissions are checked.

Logged in

Here all information is taken and displayed by an API request