Discover how to become a PHP core contributor without writing C code in this 31-minute conference talk from the International PHP Conference. Learn about the PHP Test Fest, compiling PHP, running tests, and creating test files. Explore what to test, how to test effectively, and the importance of checking source code. Gain insights from Florian Engelhardt's experience as a PHP core contributor and understand how you can give back to the community by writing tests for PHP core, even without extensive programming knowledge.