How to work with the PHP-SDK class for Qiwi checkout?

Question

Composer

Good afternoon. On the Internet, I came across an example of the API for Qiwi cash register with PHP-SDK: https://github.com/QIWI-API/bill-payments-php-sdk
To begin with, I wanted to connect the class as a regular PHP file to work with Api , but immediately got an error that the Curl\Cutl class does not exist. Then I realized that I would have to install composer, did everything as it was said about the installation in the link above, but to no avail. The strange thing is that the developers did not put autoload in the source code to make life much easier. Who will tell you how to properly access the Qiwi class?

Answer 1

composer autoload and generates - read the manual for usage.