Summary  
This chapter explains how to define functions with default parameter values so that callers can omit arguments and rely on predefined defaults.

General domain of usage  
Library and API development

A beginner-friendly course designed to introduce learners to the fundamentals of PHP functions. Explore how to define, call, and utilize functions, understand parameters and return values, grasp variable scope, and work with both built-in and user-defined functions. This course provides clear explanations, practical examples, and quizzes to reinforce your understanding.

Learn the foundational concepts of PHP functions, including how to define, call, and understand their basic structure.

Explore advanced features of PHP functions, including variable scope, anonymous functions, and default parameter values.

Apply your knowledge of functions by exploring built-in PHP functions, creating your own, and following best practices.

Default Parameter Values

Default Parameter Values