Should you update the current PHP version from 7.x to PHP 8.x in your project?

Updating PHP from version 7.x to 8.x is generally recommended, as PHP 8 brings many improvements:

• Performance enhancements through JIT compilation.
• New syntactic features (e.g., union types, named arguments).
• Improved typing and security.
• Bug fixes and security patches.

However, before updating, it is important to check the compatibility of your project and used libraries with PHP 8, as some functions may have changed or become deprecated. It is recommended to first test the project in a testing environment with PHP 8 to avoid failures in production.

If the project is actively developed and maintained, updating will be beneficial. If the project is stable and critical to stability, you can postpone the update but plan for it in the future.