Explore the world of PHP Fibers in this 51-minute conference talk from PHP UK 2022. Dive into the fundamentals of async programming as Milko Kosturkov demonstrates how to create a Proof-Of-Concept framework using Fibers. Learn about the Reflection class, nesting, and the inner workings of Fibers. Discover practical applications through examples like file downloads and global loops. Compare Fibers to generators, understand their differences from threads, and gain insights into modern asynchronous programming techniques. Engage with concepts such as deferring, refactoring, and callback management to improve code readability and efficiency.