Implementing the Observer Pattern with 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 Stand
Observer pattern in PHP
I've recently pretty much fell in love with an observer design pattern. You can basically build the whole application on it using awesome power of event driven programming. What exactly is an observer pattern ? All the theory is accessible on Wikipedia. Basically we have an object you want to monitor ( observe ) for any changes. Most of the time this object just fires out events and we want to lis
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