Description:
------------
Since it is (still) possible to call a non-static method in a static way i think this should be documented with a not recommended mention.

The section at http://www.php.net/manual/en/language.oop5.paamayim-nekudotayim.php should contain also the example from http://php.net/language.oop5.basic#example-156




Test script:
---------------
class A  {
    public function foo() {
        var_dump($this->b);
    }
}

class B {
    public $b = 'stuff';

    public function bar() {
        A::foo();
    }
}

$b = new B();
$b->bar(); // will output string 'stuff' (length=5)

Expected result:
----------------
error

Actual result:
--------------
string 'stuff' (length=5)