Description:
------------
If you declare class method without declaring it as static and then 
call it as static, under certain circumstances get_called_class() will 
return an incorrect result.

I realise it's technically incorrect to not declare a method as static, 
But some code needs to be backwards compatible with previous versions of 
PHP, where declaring a method as static will give a syntax error.

Reproduce code:
---------------
class foo {
  static public function test() { var_dump(get_called_class()); }
  public function testTwo() { var_dump(get_called_class()); }
}

class bar {
  public function test() { foo::test(); }
  public function testTwo() { foo::testTwo(); }
}

echo "outside a class\n";
foo::test();
bar::testTwo();

echo "in a class\n";
$bar = new bar();
$bar->test();
$bar->testTwo();

Expected result:
----------------
outside a class
foo
foo

in a class
foo
foo

Actual result:
--------------
outside a class
foo
foo

in a class
foo
bar