When to use -> vs :: in Object Orientation!?

[TitanKing]

Thanks for viewing my thread!

I am a fairly advanced PHP developer, however, lately I have been having sleepless night about a small thing that I might just be doing wrong...

	
        class test 
	{
			function one ()
			{
				print 'Hello World One!';
			}

		function two ()
		{
			print 'Hello World Two!';
		}		
}

// This one needs be initialized!  	
$test = new test();
$test->one();

// This one needs not be initialized! 
test::two();

I obviously know that the one does not need to be initialized, so you can call him directly. But what is the difference, when will you use the one method and when the other!?

I hope I can find a clear and understanding answer to my question...

Regards

[laserlight]

Both your member functions do not access any member variables or call other member functions via the $this pseudo variable. As such, you can call them as if they were static member functions. Strictly speaking, in PHP5, since you have not declared them static, it is not correct to call them without going through an instance, but PHP only complains at E_STRICT error reporting level.

You might want to read about the scope resolution operator and the static keyword.

[TitanKing]

Thanks laserlight, as always, the helpful one 🙂 ! I understand it correctly then, and I have been scripting correctly ...