I would like to use php-css-parser (https://github.com/sabberworm/PHP-CSS-Parser) in a website project. I do not have access to the back end terminal. The Git page provides basic instructions for installing the library with Composer. How can I install the php-css-parser library without shell access? Ideally, I would like to just ftp the files to the site directory and edit the files with a php editor if necessary.
If it is of any help, I can use cURL from a *.php file.
Thank you for any help