- var_dump: documentation ( source)
<?php
$datetime = \DateTimeImmutable::createFromFormat('m.d.Y', '23.06.2020');
var_dump($datetime);
var_dump($datetime === false);
var_dump(\DateTimeImmutable::getLastErrors());
$datetime = \DateTimeImmutable::createFromFormat('d.m.Y', '23.06.2020');
var_dump($datetime);
var_dump($datetime === false);
var_dump(\DateTimeImmutable::getLastErrors());