Worked on maintaining compatibility for schneems/php-src with upcoming PHP 8.4 changes by focusing on test suite stability. Addressed a specific issue where deprecated session directives, such as session ID length and bits per character, could cause test failures. The solution involved updating regular expressions within the test suite to recognize these new deprecations, ensuring continued reliability of automated testing. Applied targeted fixes using PHP and Makefile, leveraging skills in build systems and testing. This work prevented regressions as PHP evolved, supporting a smooth transition to PHP 8.4 without introducing new features but by resolving a critical compatibility bug.