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See availableDowngrade rules

This package is already part ofrector/rector package, so it works out of the box.

All you need to do is install the main package, and you're good to go:

composer require rector/rector --dev

To add a set to your config, useRector\Set\ValueObject\DowngradeLevelSetList class and pick target set:

useRector\Set\ValueObject\DowngradeLevelSetList;useRector\Config\RectorConfig;returnstaticfunction (RectorConfig$rectorConfig):void {$rectorConfig->sets([        DowngradeLevelSetList::DOWN_TO_PHP_72    ]);};

Then run Rector to downgrade your code to PHP 7.2!

vendor/bin/rector

It's simple in the nature. Read thesehow-to posts to get the idea:

• How all Frameworks can Bump to PHP 8.1 and You can Keep Using Older PHP
• Introducing ECS Prefixed and Downgraded to PHP 7.1
• How to bump Minimal PHP Version without Leaving Anyone Behind?
• Rector 0.10 Released - with PHP 7.1 Support

Rector is a tool thatwe develop and share for free, so anyone can save hundreds of hours on refactoring. But not everyone has time to understand Rector and AST complexity. You have 2 ways to speed this process up:

• read a book -The Power of Automated Refactoring
• hire our experienced team toimprove your code base

Both ways support us to and improve Rector in sustainable way by learning from practical projects.