I'm having trouble with the MyClass::function(); style of calling methods and can't figure out why. Here's an example (I'm using Kohana framework btw):

    class Test_Core
 {
  public $var1 = "lots of testing";

  public function output()
   {
    $print_out = $this->var1;
    echo $print_out;
   }
 }

I try to use the following to call it, but it returns $var1 as undefined:

Test::output()

However, this works fine:

  $test = new Test(); 
  $test->output();

I generally use this style of calling objects as opposed to the "new Class" style, but I can't figure out why it doesn't want to work.