PHP Language Standards

To enforce strict typing and modern syntax in PHP 8.x, apply standards requiring `declare(strict_types=1);`, constructor property promotion, `readonly` properties, and `match` expressions. This improves code clarity, maintainability, and reduces runtime errors.

Refactoring legacy PHP to use `match` expressions and `readonly` properties improves code quality and maintainability. It enforces type safety, replaces legacy switch statements for value mapping, and ensures immutable state where required.

Yes, this PHP coding standard requires comprehensive type hinting including scalar, union, and intersection types. This ensures robust type safety and adherence to modern language standards across new development and refactored legacy code.

You need to use constructor property promotion in PHP when modernizing class definitions to reduce boilerplate. This standard promotes its use alongside strict typing and readonly properties to improve overall code clarity and maintainability.

The best way to avoid legacy switch statements in PHP 8.x is to replace them with `match` expressions for value mapping. This enforces modern language standards, reduces runtime errors, and improves code maintainability.