Gumbo_Interface_Observer





	
Observer Pattern Interface, Observer
	
An Observer is simply an object that wants to receive constant updates  to the changes of another object (Observerable).  The Observer constructor  should register with the Observerable.  The Observer should also define  a destructor method (__destruct) to remove itself from any Observerable  objects it registered with.







	
	
	

	
	
	
	
	
															
																
																
																
				
			
Author(s):
												Michael Luster <mluster79@yahoo.com>

																																					

		
			
License:New BSD License

		
			
Copyright:Copyright (c) 2007, iBayou, Michael Luster

		
			
Link:http://sourceforge.net/projects/phpgumbo

		
			
Version:0.0.1

		











	


	




	
	
Interface Methods

	


	
	
	

		

			public void update ( array $data )
			[line 64]
		

		
		
Receives updated information from an Observerable object
The Observerable will send changes to the Observer through this method.  The  data is a key=>val array, containing important information about the  Observerable.  Each Observer will be required to parse the array for the  correct details.  For example, if an Observerable send out updates on it's  current status ($data['status'] = value), the Observer should look for  just the 'status' key.
 foreach ($data as $key=>$val) {
 	if ($key == "status") {
 		// do something with the value
 	}
 }
The key=>value approach was used because a single Observer can be registered  with multiple Observerable objects.
		
					
Parameter(s):

			
    
							
  • 
				(array) $data
				 :: key=>val array with important data for the Observer				
    • 
						

			

				
				
				
		
				
		

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