Summary

In this chapter, you learned the difference between conventional synchronous programming and asynchronous programming. Key terms such as event loops, timers, promises, and channels were covered. This knowledge gives you the ability to determine when a block of code is written using the asynchronous programming model, and how to rewrite portions of existing synchronous model applications to take advantage of asynchronous features.

You then learned about the Swoole extension and how it can be applied to existing application code to achieve performance improvements. You also learned about a number of other frameworks and extensions that operate in an asynchronous manner. You reviewed concrete code examples and now have a headstart on writing asynchronous code.

In the last section, you were introduced to PHP 8.1 fibers. You then reviewed a code example showing you how to create cooperative multitasking functions and class methods using PHP 8.1 fibers. You also saw how selected...