Chapter

Declaring Functions

From ComputerScienceOne by Dr Chris Bourke

Concepts

1. What are the key features of functions in PHP?

   "Functions are essential in PHP programming. PHP provides a large library of standard functions to perform basic input/output, math, and many other functions. PHP also provides the ability to define a

2. Where and how can functions be defined and used in PHP?

   "In general, you can define functions anywhere in your PHP script or codebase. They can even appear after code that invokes them because PHP hoists the function definitions by doing two passes of the

3. How do you declare functions and specify their return values in PHP?

   "In PHP, to declare a function you use the keyword function . Because PHP is dynamically typed, a function can return any type. Therefore, you do not declare the return type (just as you do not declar