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PHP-Tip-a-Day:
PHP Tutorial The Legend of the Singleton
June 13, 2012 @ 09:02:36

Following his recent allegory about the Factory pattern (as described in story form) Greg Bulmash has posted the Legend of the Singleton to help with your understanding this pattern.

The Singleton pattern provides an interface to let your application always pull out the same object (or make a new one if it needs to).

His legend talks about kings, mythological data sources and the overloading of multiple "hoses" (connections) to it. Also included is a code example showing a simple database class that includes a "getInstance" method acting as the Singleton to return either a new or the (same) current instance.

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