Online PHP editor | refs for vt5cQ

<?php if (class_exists('DateTimeImmutable')) { function compareDate(DateTimeImmutable $d1, DateTimeImmutable $d2) { if ($d1 > $d2) { return 1; } if ($d2 > $d1) { return -1; } $utc = new DateTimeZone("UTC"); $d1micro = $d1->setTimeZone($utc)->format('u'); $d2micro = $d2->setTimeZone($utc)->format('u'); echo '$d1 micro = ', $d1micro, PHP_EOL; echo '$d2 micro = ', $d2micro, PHP_EOL; if ($d1micro > $d2micro) { return 1; } if ($d1micro < $d2micro) { return -1; } return 0; } $d1 = new DateTimeImmutable('2012-02-01 00:00:00.123456'); $d2 = new DateTimeImmutable('2012-02-01 00:00:00.023456'); var_dump(compareDate($d1, $d2)); }