The easiest and recommended method to install Carbon is via composer. If you're using Laravel, Carbon is provided out of the box. You may now check our Laravel configuration and best-practices recommendations. If you're using Symfony, you may check our Symfony configuration and best-practices recommendations. Each version of Laravel has its own range of Carbon compatibility, you have to take 2.42.0 as the real used version, then pick an alias among versions Laravel supports. You may have...