How do I install Composer PHP packages without Composer?

1. Download and install XAMPP locally: https://www.apachefriends.org/index.html
2. Download and install composer locally: https://getcomposer.org/download/
3. Open command prompt, navigate to say c:\temp and and simply type the composer dependancy, for example: composer require phpoffice/phpspreadsheet:1.22.0 --ignore-platform-reqs
4. Copy the files from your c:\temp folder to your web host using an FTP program
5. Add this to the top of your php: require("vendor/autoload.php");