zend-certification

I have this question from the Zend PHP study guide and can't find a proper explanation... <?php class Magic { public $a = "A"; protected $b = array("a"=>"A", "b"=>"B", "c"=>"C"); protected $c = array(1,2,3); public function __get($v) { echo "$v,"; return $this->b[$v]; } public function __set($var, $val) { echo "$var: $val,"; $this->$var = $val; } } $m = new Magic(); echo $m->a.",".$m->b.",".$m->c.","; $m->c = "CC"; echo $m->a.",".$m->b.",".$m->c; ?> According to the guide, solution shall be " b,c,A,B,C,c: CC,b,c,A,B,C ". I can't figure out why - maybe you do? My intention is that the first