Gain insights into functional programming in PHP. Learn about pure functions, immutable data, and monads. Explore error handling and apply principles through practical projects.

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Functional programming is a paradigm that emphasizes expressing program logic as compositions of pure functions. PHP is a good fit for functional programming as functions are first-class citizens in its userland.
 
This course introduces you to the core concepts of functional programming, like pure functions, immutable data structures, and referential transparency. From there, you'll explore ways to handle errors with default values and callbacks while also exploring sum types such as Either or Maybe. Next, you'll look at functors before diving deep into monads, including IO, State, Reader, and List.
 
By the end of this course, you'll have a keen understanding of how to apply these principles in practice through a worked-out project. Not only will you know another way to program, but you’ll also feel confident enough to apply these ideas to your projects in PHP.

Learn Functional Programming in PHP

(Fill in the blank.) The pioneering works of ________ and ________ constitute the basis of functional programming as we know it today.

(Fill in the blank.) The pioneering works of ________ and ________ constitute the basis of functional programming as we know it today.

Writing programs that are compositions of pure functions

Functional programming reduces the cognitive burden of writing code

Functional programming is very popular these days

What's the fundamental premise of functional programming?

What’s the fundamental premise of functional programming?

What signifies the declarative nature of functional programming?

What signifies the declarative nature of functional programming?

Both the object-oriented and procedural paradigms

A decline in the pervasiveness of functional programming in the 1970s coincided with a surge in the popularity of which paradigms?

A decline in the pervasiveness of functional programming in the 1970s coincided with a surge in the popularity of which paradigms?

First-class functions are usable in a variety of contexts.

First-class functions are free of side effects and side causes.

What's the significance of functions being first-class citizens?

What’s the significance of functions being first-class citizens?

Assess your knowledge of functional programming in PHP so far through a quiz.

Getting Started

An Introduction to Functional Programming in PHP

Core Concepts: Functional Programming in PHP

Composition and Helper Functions

Error Handling in Functional Programming

Functors in PHP

Parallelization of Tasks in PHP

Recursion, Pattern Matching, and Property Testing

Phonebook Application — A Simple Project

Conclusion

Appendix

Quiz: Introduction to Functional Programming in PHP