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

fp15aug.tar.gz

php7.4

ch8-phonebook

php8.1

purescript

python-pytoolz

chapter5-challenge1

AMQP

eris-testing-lesson

AMQP-Challenge

eris-testing-challenge

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

# Similarities between OOP and FP

Some factors might lead you to believe that functional programming and object-oriented programming are fundamentally opposed. The reality, however, is that they’re closely related. Object-oriented programming, a term coined by Alan Kay, is a construct with many implicit functional programming ideas focused around #key# **message passing**: The idea of passing values between different components, like functions or objects, of the system as a message.  #key#. OOP’s origin is in science. Its creator modeled the paradigm after biological cells. He viewed it as a real-life analogy for his conceptualization of the future of computing that is, a nexus of networked devices.


Get a quick comparison of functional programming and OOP.

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

Functional Programming and Object-Oriented Programming

Similarities between OOP and FP