<?php
function nums_from($from, $to, $s) {
static $x = 0;
echo ( $from + $x ).' ' ;
$x = $from;
if ($from < $to){
nums_from($from + $s, $to, $s );
}
}
nums_from(1, 10, 2);
PD9waHAKCmZ1bmN0aW9uIG51bXNfZnJvbSgkZnJvbSwgJHRvLCAkcykgewoJc3RhdGljICR4ID0gMDsKICAgIGVjaG8gKCAkZnJvbSAgKyAkeCApLicgJyA7CgkkeCA9ICRmcm9tOwoKICAgIGlmICgkZnJvbSA8ICR0byl7CiAgICAgICAgbnVtc19mcm9tKCRmcm9tICsgJHMsICR0bywgJHMgKTsKICAgIH0KfQpudW1zX2Zyb20oMSwgMTAsIDIpOw==