3.x Migration Guide

Chronos 3.x contains breaking changes that could impact your application. This guide provides an overview of the breaking changes made in 3.x

Minimum of PHP 8.1

Chronos 3.x requires at least PHP 8.1. This allows chronos to provide more comprehensive typehinting and better performance by leveraging features found in newer PHP versions.

MutableDateTime and MutableDate removed

The MutableDateTime and MutableDate classes have been removed. Long term PHP will be deprecating and removing mutable datetime classes in favour of immutable ones. Chronos has long favoured immutable objects and removing the mutable variants helps simplify the internals of Chronos and encourages safer development practices.