Worked on the schneems/php-src repository to enhance CI build stability and ensure cross-compiler compatibility, focusing on environments using Visual Studio 16 and Visual Studio 22. Addressed a C23 syntax compatibility issue by initializing specific struct members to zero in C, which resolved build failures and reduced flakiness in the continuous integration process. The work centered on improving the reliability of build systems rather than delivering user-facing features, emphasizing long-term maintainability across multiple compiler versions. Utilized skills in C programming, build systems, and compiler compatibility to create a more robust CI pipeline, supporting consistent development workflows for the project.