Typed PHP


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Typed PHP

Stronger Types For Cleaner Code

About the Book

PHP has a rich history and a dominant place on the web. It has achieved much despite language inconsistencies and difficulties.  Bjarne Stroustrup once said: "There are only two kinds of languages: the ones people complain about and the ones nobody uses". PHP is one of those languages that everybody uses, yet that's often seen as a good reason to ignore the bad parts and just get stuff done. 

I'm all for getting stuff done, and to that end I have used Plain Ol' PHP for many years. It's always bugged me how procedural PHP is, in an ecosystem of OOP libraries and frameworks. So I decided to take a deeper look at building a stronger type system on top of PHP.

That's the goal of this book. We look at using standard PHP libraries. We look at using user-land libraries. We look at using extensions and cross-compilers. All this is works towards creating a set of reusable tools which unify and ease the scalar types of PHP.

About the Author

Christopher Pitt
Christopher Pitt

I am a developer and writer, working at Over.

About the Contributors

Erika Heidi
Erika Heidi

Technical Reviewer

Erika is helping me review the sections on Vagrant and Phansible. Find her books at leanpub.com/u/erikaheidi
Paul M. Jones
Paul M. Jones

Technical Reviewer

Paul is helping me review the whole book. Find his books at leanpub.com/u/pmjones
Phil Sturgeon
Phil Sturgeon

Technical Reviewer

Phil is helping me review the whole book. Find his books at leanpub.com/u/philsturgeon

Table of Contents

  • Introduction
    • Why Write This Book
    • Who This Book Is For
    • Procedural / Object Oriented
      • Procedural Programming
      • Object Oriented Programming
      • Which is the best?
      • Which is PHP?
    • Native Function Inconsistencies
      • Sporadic Underscores
      • Sporadic Abbreviation
      • Inconsistent Argument Order
      • Regular Expression / Strings
      • Nouns / Verbs
      • Strange Return Values
    • Conclusion
  • Structure
    • Boxing
    • Resolving Types
      • Functions
      • Regular Expressions
    • All Together!
    • Namespace Functions
      • Composer Autoload
      • Future Goodies
    • Optional Types
      • The Null Problem
      • Optional Values
      • In The Wild
    • Conclusion
  • Extensions
    • Vagrant + Phansible
      • Installing
      • Provisioning
      • Vagrant Commands
    • SPL Types
      • Installing SPL Types
      • Using SPL Types
    • Scalar Objects
      • Installing Scalar Objects
      • Using Scalar Objects
    • Zephir
      • Installing Zephir
      • Using Zephir
    • Conclusion
  • Design
    • Which Method To Use
      • Namespace Methods
      • Scalar Objects / SPL Types
      • Zephir
    • How To Structure The Types
      • Resolving Types
      • Chaining
      • Combining Number Types
    • How To Test
      • PHPUnit
      • What Should We Test?
      • When Should We Write Tests?
      • Recommendations
    • How To Package
      • Make A Readme File
      • A Few Examples
      • Testing Instructions
      • Installation Instructions
      • License
      • Contribution Guidelines
    • Conclusion
  • Designing For The Future
  • Appendices
    • Extending Composer
      • Example: Path Plugin
        • Getting Started
        • Defining Paths
        • Overriding Paths
        • Implications
      • Example: Hook Plugin
        • Getting Started
        • Describing Configuration
        • Altering Configuration Files
        • Implications
    • PHP Implementation
      • Functions
        • Type Functions
        • String Functions
        • Number Functions
        • Array Functions

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