Worked on enhancing the Cacti/cacti repository by implementing PHP 8.5 compatibility and improving XML parsing reliability for production environments. Focused on modernizing the codebase, the developer replaced deprecated backtick operators with shell_exec, updated case statement syntax, and introduced version checks for XML parser functions to ensure smooth operation with the latest PHP release. This work aligned with the PHP upgrade roadmap and addressed potential deprecations before deployment. Utilizing PHP and XML parsing skills, the developer contributed a targeted feature that supports ongoing backend development efforts, emphasizing maintainability and future-proofing the application for evolving language standards and production requirements.