Worked on the laravel/framework repository to enhance the reliability of number formatting utilities in PHP backend development. Addressed a critical bug by introducing a guard in the Number utility, ensuring that non-finite inputs such as INF, -INF, and NAN are handled gracefully without causing stack overflows or memory exhaustion. The solution delegated problematic cases to the existing format method, leveraging locale-aware output via NumberFormatter. Comprehensive unit tests were added to cover these edge cases, aligning with established guard patterns and improving maintainability for the 13.x series. This maintenance fix reduced production crashes and deprecation warnings across diverse locales.