Gumbo PHP Library API Documentation

Singleton Pattern Interface

The Singleton Design Pattern ensures that only one object of the class is instantiated during runtime. The static method checks if an object has been created. If the reference is null, it creates a new object using the private Constructor.

Requirements:

• private static property to hold single object reference
• private constructor

 private static $_instance = null;
 private function __construct () {}
 public static function instance () {
 	if (self::$_instance == null) {
 		self::$_instance = new MyClassName ();
 	}
 	return self::$_instance;
 }