function get_cc()
{
    foreach (debug_backtrace() as $call) {
        if (!isset($call['class'])) {
            continue;
        }
        return $call['class'];
    }

}



class Foo
{

    public function bar()
    {
        dump(get_cc());
    }

    public static function baz()
    {
        dump(get_cc());
    }

}


$foo = new Foo;
$foo->bar();

Foo::baz();