foreach problem

$data['lavorazioni'] = get_works(array('READY', 'IN PROGRESS'));









/**************** HELPER ******************/

function get_works($status = array('READY')) {
    $CI = &get_instance();
    $query = "SELECT * FROM manager_works WHERE";

    $i = 0;
    foreach ($status as $s) {
        if($i > 0) {
            $query .= " OR ";
        }

        $query .= "state = '" . $s . "'";
        $i++;
    }

    $query = $CI->db->query($query);

    if ($query->num_rows() == 1) {
        return count($query->row());
    } else {
        return null;
    }
}