PHP MySQL - Stilson.net

www.it-ebooks.infoCHAPTER 4 • FUNCTIONSOnce included, any of the three functions found in this library can be invoked as needed.SummaryThis chapter concentrated on one of the basic building blocks of modern-day programming languages:reusability through functional programming. You learned how to create and invoke functions, passinformation to and from the function block, nest functions, and create both recursive and variablefunctions. Finally, you learned how to aggregate functions together as libraries and include them intothe script as needed.The next chapter introduces PHP’s array features, covering the language’s vast swath of arraymanagement and manipulation capabilities.101