PHP MySQL - Stilson.net

www.it-ebooks.infoCHAPTER 3 • PHP BASICSThe require_once() function ensures that the inclusion file is included only once in your script.After require_once() is encountered, any subsequent attempts to include the same file will be ignored.Other than the verification procedure of require_once(), all other aspects of the function are thesame as for require().SummaryAlthough the material presented here is not as glamorous as what you’ll find in later chapters, it isinvaluable to your success as a PHP programmer because all subsequent functionality is based on thesebuilding blocks.The next chapter formally introduces the concept of a function, which is a reusable chunk of codeintended to perform a specific task. This material starts you down the path necessary to begin buildingmodular, reusable PHP applications.89