Functional Programming in PHP
$9.99
Minimum price
$9.99
Suggested price

Functional Programming in PHP

About the Book

Functional Programming, a style predicated on the Lambda Calculus, is one of the more prominent trends in engineering today. For many, the style's verbiage is dishearteningly esoteric despite the salience of its many ideas in various codebases. PHP remains one of the most used languages for web development and has taken several leaps and bounds since its inception in the twentieth century - advancements that have rendered the language functional programming-amiable. 

The book, Functional Programming in PHP, is an attempt to distill paradigm-centric ideas for PHP audiences - its purpose is to make sense of the abstruseness. 

About the Author

Lochemem Bruno Michael
Lochemem Bruno Michael

PHP and Functional Programming enthusiast; podcaster and content creator.

About the Contributors

Cees-Jan Kiewiet
Cees-Jan Kiewiet

Reviewer

Mr. Cees-Jan Kiewiet is a Senior engineer at Usabilla and core maintainer of ReactPHP. Based in the Netherlands, he has over fifteen years of programming experience and is proficient in, besides PHP, Golang, and Java. Mr. Kiewiet loves to play video games, meet with developers at meetups, and bask in the tranquility of his garden when he is not breaking servers

Chun-Sheng Li
Chun-Sheng Li

Reviewer

Chun-Sheng, Li is a web backend developer from Taiwan, Taipei.

He is currently based in Hsinchu. Mr. Chun-Sheng is familiar with PHP and JavaScript. He loves to develop web applications, web services and some open source projects on Github.

In addition to PHP, He also loves to research other technologies. Like JavaScript, web security, Blockchain, and IOTA. He’s also a backend developer and works in Industrial Technology Research Institute. Mr.Chun-Sheng is a blog writer, open source project contributor and traveler.

Table of Contents

  • Introduction to Functional Programming in PHP  
    • A brief history of PHP
    • A Brief History of Functional Programming
    • Defining Functional Programming
    • Functional Programming is a Declarative Paradigm
    • The Benefits of Functional Programming
    • Relevance to a PHP Developer
    • Functional Programming in Other Contexts
  •  
  • Functional Programming Core Concepts  
    • Functions
    • Functional Programming and Object-Oriented Programming
    • Pure Functions
    • Side-causes and side-effects
    • Dealing with side-effects and side-causes
    • A Brief Note About Type Signatures
    • Immutability
    • Constants in PHP
    • Immutable lists
    • Tries
    • Value Objects
    • Temporal Coupling
    • Transient Mutation
    • Referential Transparency
    • REPL Environments for Functional Programming
  • Composition and Helper Functions
    • Composing Functions
    • Traditional Function Composition
    • Point-free Function Composition
    • Currying
    • Partial Application
    • Map, Filter, and Fold
    • Transducers
    • Helper Functions
  • Error Handling in Functional Programming
    • Exceptions are Impure
    • Working Without Exceptions
    • Callbacks
    • PHP Error Messages
    • Default Values
    • Sum and Union Types
    • The Maybe Monad
    • The Either Monad
    • The Railway Pattern
  •  
  • Functors
    • A Crashcourse in Category Theory
    • Defining Category Theory
    • What About Functors
    • Functors in Programming
    • Functors are Type Classes
    • Functor Properties
    • Monads
    • Practical Monads
    • Monad Functions
    • The IO Monad
    • The Reader Monad
    • The State Monad
    • The Writer Monad
    • The List Monad
  • Parallelization of Tasks in PHP
    • PHP's Capabilities
    • Threading in PHP
    • The pthreads extension
    • parallel is a Better Threading Option
    • Multiprocessing in PHP
    • Message Brokers
  •  
  • Recursion, Pattern Matching and Property Testing
    • Recursion
    • Pattern Matching
    • Property Testing
  • A Simple Project
  • Appendix

The Leanpub 60 Day 100% Happiness Guarantee

Within 60 days of purchase you can get a 100% refund on any Leanpub purchase, in two clicks.

Now, this is technically risky for us, since you'll have the book or course files either way. But we're so confident in our products and services, and in our authors and readers, that we're happy to offer a full money back guarantee for everything we sell.

You can only find out how good something is by trying it, and because of our 100% money back guarantee there's literally no risk to do so!

So, there's no reason not to click the Add to Cart button, is there?

See full terms...

Earn $8 on a $10 Purchase, and $16 on a $20 Purchase

We pay 80% royalties on purchases of $7.99 or more, and 80% royalties minus a 50 cent flat fee on purchases between $0.99 and $7.98. You earn $8 on a $10 sale, and $16 on a $20 sale. So, if we sell 5000 non-refunded copies of your book for $20, you'll earn $80,000.

(Yes, some authors have already earned much more than that on Leanpub.)

In fact, authors have earnedover $13 millionwriting, publishing and selling on Leanpub.

Learn more about writing on Leanpub

Free Updates. DRM Free.

If you buy a Leanpub book, you get free updates for as long as the author updates the book! Many authors use Leanpub to publish their books in-progress, while they are writing them. All readers get free updates, regardless of when they bought the book or how much they paid (including free).

Most Leanpub books are available in PDF (for computers) and EPUB (for phones, tablets and Kindle). The formats that a book includes are shown at the top right corner of this page.

Finally, Leanpub books don't have any DRM copy-protection nonsense, so you can easily read them on any supported device.

Learn more about Leanpub's ebook formats and where to read them

Write and Publish on Leanpub

You can use Leanpub to easily write, publish and sell in-progress and completed ebooks and online courses!

Leanpub is a powerful platform for serious authors, combining a simple, elegant writing and publishing workflow with a store focused on selling in-progress ebooks.

Leanpub is a magical typewriter for authors: just write in plain text, and to publish your ebook, just click a button. (Or, if you are producing your ebook your own way, you can even upload your own PDF and/or EPUB files and then publish with one click!) It really is that easy.

Learn more about writing on Leanpub