Chapter

Optional & Default Parameters

From ComputerScienceOne by Dr Chris Bourke

Concepts

1. What happens when optional PHP function parameters are omitted?

   "Parameters in PHP functions are optional. You can invoke a function without providing a subset of parameters. However, if a parameter is not provided, PHP will treat the parameter as null. If we invo

2. How do default parameter values work in PHP functions?

   "PHP also allows you to define alternative default values for function parameters. Consider the following example.\n\nfunction getMonthlyPayment($principle, $apr = 0.05, $terms = 60) {\n\n$rate = ($ap