function checkthedate($today, $newday) {
$tdate = explode("-", $today);
$unixtime = mktime(0,0,0,$tdate[1],$tdate[2],$tdate[0]);
$ndate = explode("-", $newday);
$nunixtime = mktime(0,0,0,$ndate[1],$ndate[2],$ndate[0]);
$total = $nunixtime - $unixtime;
if (($total / 86400) > 90) {
$okay = 1;
}
return $okay;
}
//Sample usage
if(checkthedate("2000-11-6", "2001-2-1")) {
print "its greater than 90 days";
}
else {
print "its not greater than 90 days";
}
exit;