$date = new DateTime();
$date->setTimestamp(1530730560);
$date->setTime(0, 0);
echo $date->format('U');
if (count(explode('.', $value)) == 3) {
echo "ok";
}
if (preg_match('/\d{2}\.\d{2}\.\d{2,4}/', $value) === 1) {
echo "ok";
}
if (preg_match('/.+\..+\..+/', $value) === 1) {
echo "ok";
}