Description:
------------
Local static variables, in the parent and child classes, is the same.
In 5.5.7 has same proplem.

https://bugs.php.net/bug.php?id=53155

Test script:
---------------
<?php

class Test {

	public static function hello()
	{
		static $my;
		if ($my) {
			$my = '2';
		} else {
			$my = '1';
		}
		var_dump($my);
	}
}

class Test2 extends Test {
}

Test::hello();
Test::hello();
Test2::hello();

Expected result:
----------------
string(1) "1"
string(1) "2"
string(1) "2"

Actual result:
--------------
string(1) "1"
string(1) "2"
string(1) "1"