checks date time if date is today, tomorrow, already passed or anything else

$date = '2019-05-11';

$date = new DateTime($date);
$now = new DateTime();

if($date == $now) {
  echo "Today";
} elseif($date == $now->modify('+1 day')) {
  echo "Tomorrow";
} elseif($date > $now) {
  echo "In the future";
} elseif($date < $now) {
  echo "In the past";
}