Online PHP editor | refs for aIPnR

<?php date_default_timezone_set('Europe/Prague'); $d1 = new DateTime('@-21474836470'); $d1->setTimezone(new DateTimeZone(date_default_timezone_get())); echo $d1->format('c'); echo "\n"; echo $d1->format('U'); echo "\n"; $d2 = new DateTime('1289-06-27 16:38:50'); echo $d2->format('c'); echo "\n"; echo $d2->format('U'); echo "\n"; echo $d1 == $d2 ? 't' : 'f';