note 21947 added to ref.math

And the reason I needed a Factorial function is because I there were no nPr or nCr functions native to PHP, either. function n_pick_r($n,$r){$n=(int)$n; $r=(int)$r;return (fact($n)/fact($n-$r));} function n_choose_r($n,$r){$n=(int)$n; $r=(int)$r;return (n_pick_r($n,$r)/fact($r));} Hope that helps someone! -- http://www.php.net/manual/en/ref.math.php http://master.php.net/manage/user-notes.php?action=edit+21947 http://master.php.net/manage/user-notes.php?action=delete+21947 http://master.php.net/manage/user-notes.php?action=reject+21947