News Feed
Sections




News Archive
Looking for more information on how to do PHP the right way? Check out PHP: The Right Way

Ryan Gantt's Blog:
Horizontal reusability with traits in PHP 5.4
August 24, 2011 @ 10:42:42

Ryan Gantt has a new tutorial posted to his blog today looking at one of the features in the upcoming PHP 5.4.x releases - traits. Specifically he looks at the horizontal reusabillity they allow for in your applications.

The ability for a class to inherit from multiple parents is maligned by many, but can be a good thing in some situations. For those working in PHP, multiple inheritance has never been an option; classes are limited to one parent, though they can implement many other datatypes through the use of interfaces. Interfaces can lead to code duplication in improperly-factored inheritance hierarchies. Even in well-architected hierarchies, multiple classes that implement similar methods can contain a lot of overlap.

He starts with a definition of what traits are and where their real usefulness is (as well as what should be the difference between a class and a trait). He gives an example of a typical hierarchy where two classes extend a parent but then they both need the same functionality. Code duplication's not a possibility and inheritance make run into exposure issues. Traits come to the rescue by dropping in just the feature you need when you need it. His example code shows adding some logging to a simple class via a "Logging" trait and a "Singleton trait" example.

0 comments voice your opinion now!
horizontal reusability traits singleton logging tutorial introduction


blog comments powered by Disqus

Similar Posts

Stefan Mischook's Blog: Zend Framework Video Tutorials

PHPBuilder.com: Oracle with PHP: a Developer's View

Rob Allen's Blog: Unit testing Zend Framework 1

Andrew Podner: Lithium: Building Views Using Layouts

Sudheer Satyanarayana's Blog: A Bit Of XML, RSS And CURL In 7 Lines Of PHP And A Useful Program


Community Events

Don't see your event here?
Let us know!


wordpress laravel opinion community podcast development unittest api conference library language framework voicesoftheelephpant laravel5 series interview introduction middleware extension release

All content copyright, 2015 PHPDeveloper.org :: info@phpdeveloper.org - Powered by the Solar PHP Framework