class test
    {
        var $_value;

        function test_static ($to)
        {
            $this->_value = $to;
        }
    }


    class test2
    {
        var $_value;

        function use_test ()
        {
            $this->_value = 7;

            $y = new test();
            $y->test_static(5);
            echo "<p>value: ".$this->_value."</p>";

            test::test_static (5);
            echo "<p>value: ".$this->_value."</p>";

        }
    }

    $x=new test2();
    $x->use_test();

First echo returns value 7
Second echo returns value 5

is this correct?