Online PHP editor | output for aZ9uN

@ 2016-05-11T15:36:46Z

<?php

function buildDatetime($time, $now, $zone)
{
   $datetime = new \DateTime();
   $datetime->setTimestamp(strtotime($time, $now));
   $datetime->setTimezone(new DateTimezone($zone));
   return $datetime;
}

$now = new \DateTime('2000-01-02 00:00:00', new \DateTimeZone('UTC'));

date_default_timezone_set('America/Los_Angeles');

$date = buildDatetime('yesterday', $now->getTimestamp(), 'UTC');
var_dump($date->format('c'), $date->getTimezone()->getName());

Output for 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: string(25) "1999-12-31T08:00:00+00:00" string(3) "UTC"
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 string(25) "1999-12-31T08:00:00+00:00" string(3) "UTC"

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