News Feed
Sections




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

Zend Developer Zone:
Implementing the Observer Pattern with SplObserver and SplSubject
June 10, 2010 @ 12:15:36

New on the Zend Developer Zone today there's a new tutorial showing you how to set up a script that uses the Observer design pattern with the help of two bits of functionality from the SPL - SplObserver and SplSubject.

As PHP applications grow into complex object-oriented systems, developers look to create centralized components to execute repetitive tasks. These include logging, emailing, redirects, and more. The Observer pattern is a commonly used design pattern to hook such components into an application during runtime, thereby making them reusable. Since PHP 5.1, there are two interfaces built into the Standard PHP Library (SPL) that can be implemented to use the Observer pattern in your application. They are SplSubject, and SplObserver.

They create an exception handler that implements the SplSubject interface (and its "attach", "detach" and "notify" methods) to let the observers of the instance know when an exception is thrown. Code examples are included of both the basic example and a "Mailer" and "Logger" class that can watch the exception handler.

0 comments voice your opinion now!
splobserver splsubject spl tutorial observer designpattern


blog comments powered by Disqus

Similar Posts

ZendCasts.com: PHAR Out Autoloading

PHPMaster.com: Creating a Mobile Photo Blog, Part 1

Matthew Weier O'Phinney's Blog: From the inside-out: How to layer decorators

C7Y: Practical Uses for the PHP Tokenizer

WebMonkey: Get Your Feet Wet with WordPress


Community Events





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


bugfix introduction release wordpress laravel library list api threedevsandamaybe podcast series interview unittest language install developer code community application configure

All content copyright, 2014 PHPDeveloper.org :: info@phpdeveloper.org - Powered by the Solar PHP Framework