<?php
function nums_from($from, $to, $s, $prev = 0) {
echo ( $from + $prev ).' ' ;
if ($from < $to){
nums_from($from + $s, $to, $s, $from );
}
}
nums_from(1, 10, 2);
PD9waHAKCmZ1bmN0aW9uIG51bXNfZnJvbSgkZnJvbSwgJHRvLCAkcywgJHByZXYgPSAwKSB7CgllY2hvICggJGZyb20gICsgJHByZXYgKS4nICcgOwoKCWlmICgkZnJvbSA8ICR0byl7CgkgICAgbnVtc19mcm9tKCRmcm9tICsgJHMsICR0bywgJHMsICRmcm9tICk7Cgl9Cn0KbnVtc19mcm9tKDEsIDEwLCAyKTs=