Online PHP editor | refs for CjJLf

<?php function createDtFromTimestamp(float $timestamp): \DateTime { $timestamp = round($timestamp * 1e6) * 1e-6; $sec = (int) sprintf('%0.0f', floor($timestamp)); $usec = (int) sprintf('%0.0f', min(max(($timestamp - $sec) * 1e6, 0), 999999)); $datetime = new \DateTime(date('Y-m-d H:i:s.', $sec) . sprintf('%06d', $usec)); return $datetime; } function dumpDt(\DateTime $dt) { echo $dt->format('Y-m-d H:i:s.u') . ' ' . $dt->getTimestamp() . ' ' . $dt->format('u') . "\n"; } foreach ([0.4, 0, -0.4, -1, -1.4] as $ts) { $dateExpected = createDtFromTimestamp($ts); dumpDt($dateExpected); $date = new DateTime('@' . $ts); dumpDt($date); echo "\n"; }