How to correctly connect the library to the project through composer?

Question

PHP

There is such a library Pchart. I did not find it on the github and, accordingly, the lines on how to connect it via composer.
On the main site of this library, I downloaded it. How can I properly load it into my project so that composer will automatically include this library?

Answer 1

Do you want to connect via composer, but are you looking for on github? oO
https://packagist.org/search/?q=Pchart

Answer 2

https://packagist.org/search/?tags=pchart
ps generating graphics on php-backend is a so-so idea. Not even counting the lack of interactive output.