$st = 248899;
$upi = 's1';
if($st < 330000 AND $st > 160000) {
$upi = 's2';
} elseif ($st < 160000) {
$upi = 's3';
}
header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");