Worked on enhancing the SNMP extension within the php/php-src repository, focusing on improving error handling and code maintainability. Utilized C programming and system programming skills to promote invalid-input warnings to ValueError, providing users with clearer, argument-specific error messages that streamline troubleshooting. Refactored argument and variable names throughout the extension to ensure consistency and readability, which supports easier onboarding for new contributors and facilitates future enhancements. The work addressed both a feature and a bug fix, demonstrating disciplined, commit-driven development practices and a strong grasp of network programming concepts, while delivering tangible improvements to the extension’s usability and maintainability.