Description:
------------
When you call parent::method() and there is a static variable in this, the value returned to all inherited objects is the same

Test script:
---------------
class A
{
	function a()
	{
		static $i;
		
		if (!$i)
		{
			$i = $this->value;
		}
		
		return $i;
	}
}

class B extends A
{
	public $value = 'B';
}

class C extends A
{
	public $value = 'C';
	
	function a()
	{
		return parent::a();
	}
}

$b = new B;
echo $b->a();

$c = new C;
echo $c->a();

Expected result:
----------------
BC

Actual result:
--------------
BB